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664287103 = 1636016781
BaseRepresentation
bin100111100110000…
…011011101111111
31201021222021121001
4213212003131333
52330024141403
6145525551131
722314230044
oct4746033577
91637867531
10664287103
11310a77807
121665754a7
13a7816cbc
146431d1cb
153d4bac1d
hex2798377f

664287103 has 8 divisors (see below), whose sum is σ = 669573296. Its totient is φ = 659016000.

The previous prime is 664287083. The next prime is 664287149. The reversal of 664287103 is 301782466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-664287103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664288103) 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, 94573 + ... + 101353.

It is an arithmetic number, because the mean of its divisors is an integer number (83696662).

Almost surely, 2664287103 is an apocalyptic number.

664287103 is a deficient number, since it is larger than the sum of its proper divisors (5286193).

664287103 is a wasteful number, since it uses less digits than its factorization.

664287103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 664287103 is about 25773.7677300002. The cubic root of 664287103 is about 872.5398554876.

The spelling of 664287103 in words is "six hundred sixty-four million, two hundred eighty-seven thousand, one hundred three".

Divisors: 1 163 601 6781 97963 1105303 4075381 664287103