6986904975 has 18 divisors (see below), whose sum is σ = 12514323536. Its totient is φ = 3726349200.

The previous prime is 6986904973. The next prime is 6986904983. The reversal of 6986904975 is 5794096896.

It is a happy number.

6986904975 is a `hidden beast` number, since 69 + 86 + 9 + 0 + 497 + 5 = 666.

It is not a de Polignac number, because 6986904975 - 2¹ = 6986904973 is a prime.

It is a super-2 number, since 2×6986904975² = 97633682259359501250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6986904973) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15526231 + ... + 15526680.

Almost surely, 2^6986904975 is an apocalyptic number.

6986904975 is a deficient number, since it is larger than the sum of its proper divisors (5527418561).

6986904975 is a wasteful number, since it uses less digits than its factorization.

6986904975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31052927 (or 31052919 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The square root of 6986904975 is about 83587.7082769949. The cubic root of 6986904975 is about 1911.7375866611.

The spelling of 6986904975 in words is "six billion, nine hundred eighty-six million, nine hundred four thousand, nine hundred seventy-five".