975640985 has 16 divisors (see below), whose sum is σ = 1294704000. Its totient is φ = 699834240.

The previous prime is 975640973. The next prime is 975641011. The reversal of 975640985 is 589046579.

975640985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-975640985 is a prime.

It is a super-2 number, since 2×975640985² = 1903750663223540450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117485 + ... + 125514.

It is an arithmetic number, because the mean of its divisors is an integer number (80919000).

Almost surely, 2^975640985 is an apocalyptic number.

It is an amenable number.

975640985 is a deficient number, since it is larger than the sum of its proper divisors (319063015).

975640985 is a wasteful number, since it uses less digits than its factorization.

975640985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243088.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The square root of 975640985 is about 31235.2522800761. The cubic root of 975640985 is about 991.8134923088.

The spelling of 975640985 in words is "nine hundred seventy-five million, six hundred forty thousand, nine hundred eighty-five".