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6983007957 = 321375663429
BaseRepresentation
bin1101000000011100…
…00011111011010101
3200000122202120002100
412200032003323111
5103300122223312
63112530032313
7335021405532
oct64016037325
920018676070
106983007957
112a637a9262
12142a718699
13873936993
144a35b5d89
152ad0ae5dc
hex1a0383ed5

6983007957 has 12 divisors (see below), whose sum is σ = 10160193420. Its totient is φ = 4621357248.

The previous prime is 6983007949. The next prime is 6983007961. The reversal of 6983007957 is 7597003896.

It can be written as a sum of positive squares in 2 ways, for example, as 3586332996 + 3396674961 = 59886^2 + 58281^2 .

It is not a de Polignac number, because 6983007957 - 23 = 6983007949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6983007257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2830482 + ... + 2832947.

It is an arithmetic number, because the mean of its divisors is an integer number (846682785).

Almost surely, 26983007957 is an apocalyptic number.

It is an amenable number.

6983007957 is a deficient number, since it is larger than the sum of its proper divisors (3177185463).

6983007957 is a wasteful number, since it uses less digits than its factorization.

6983007957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663572 (or 5663569 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 6983007957 is about 83564.3940742707. The cubic root of 6983007957 is about 1911.3820901353.

The spelling of 6983007957 in words is "six billion, nine hundred eighty-three million, seven thousand, nine hundred fifty-seven".

Divisors: 1 3 9 137 411 1233 5663429 16990287 50970861 775889773 2327669319 6983007957