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2070471817 = 6473200111
BaseRepresentation
bin111101101101000…
…1110010010001001
312100021221212101101
41323122032102021
513220020044232
6541241221401
7102210501661
oct17332162211
95307855341
102070471817
11972800137
12499491861
1326cc4c86b
14158da11a1
15c1b831e7
hex7b68e489

2070471817 has 4 divisors (see below), whose sum is σ = 2073672576. Its totient is φ = 2067271060.

The previous prime is 2070471763. The next prime is 2070471839. The reversal of 2070471817 is 7181740702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7181740702 = 23590870351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2070471817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2070471217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599409 + ... + 1600702.

It is an arithmetic number, because the mean of its divisors is an integer number (518418144).

Almost surely, 22070471817 is an apocalyptic number.

It is an amenable number.

2070471817 is a deficient number, since it is larger than the sum of its proper divisors (3200759).

2070471817 is an equidigital number, since it uses as much as digits as its factorization.

2070471817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200758.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 2070471817 is about 45502.4374841612. The cubic root of 2070471817 is about 1274.5487198495.

The spelling of 2070471817 in words is "two billion, seventy million, four hundred seventy-one thousand, eight hundred seventeen".

Divisors: 1 647 3200111 2070471817