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2070720631 = 7473362501
BaseRepresentation
bin111101101101100…
…1011000001110111
312100022102111200201
41323123023001313
513220101030011
6541250421331
7102212556250
oct17333130167
95308374621
102070720631
11972960071
12499591847
13270008ba5
14159027b27
15c1bd1cc1
hex7b6cb077

2070720631 has 8 divisors (see below), whose sum is σ = 2367075744. Its totient is φ = 1774500000.

The previous prime is 2070720563. The next prime is 2070720647. The reversal of 2070720631 is 1360270702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2070720631 - 229 = 1533849719 is a prime.

It is a super-2 number, since 2×20707206312 = 8575767863298076322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2070720631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070720661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881 + ... + 64381.

It is an arithmetic number, because the mean of its divisors is an integer number (295884468).

Almost surely, 22070720631 is an apocalyptic number.

2070720631 is a deficient number, since it is larger than the sum of its proper divisors (296355113).

2070720631 is an equidigital number, since it uses as much as digits as its factorization.

2070720631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67241.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 2070720631 is about 45505.1714753389. The cubic root of 2070720631 is about 1274.5997730862.

The spelling of 2070720631 in words is "two billion, seventy million, seven hundred twenty thousand, six hundred thirty-one".

Divisors: 1 7 4733 33131 62501 437507 295817233 2070720631