975691057 has 4 divisors (see below), whose sum is σ = 1064390256. Its totient is φ = 886991860.

The previous prime is 975691049. The next prime is 975691091. The reversal of 975691057 is 750196579.

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.

It is a cyclic number.

It is not a de Polignac number, because 975691057 - 2³ = 975691049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 975691057.

It is not an unprimeable number, because it can be changed into a prime (975691357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44349583 + ... + 44349604.

It is an arithmetic number, because the mean of its divisors is an integer number (266097564).

Almost surely, 2^975691057 is an apocalyptic number.

It is an amenable number.

975691057 is a deficient number, since it is larger than the sum of its proper divisors (88699199).

975691057 is a wasteful number, since it uses less digits than its factorization.

975691057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88699198.

The product of its (nonzero) digits is 595350, while the sum is 49.

The square root of 975691057 is about 31236.0538000561. The cubic root of 975691057 is about 991.8304593545.

The spelling of 975691057 in words is "nine hundred seventy-five million, six hundred ninety-one thousand, fifty-seven".