975017691 has 6 divisors (see below), whose sum is σ = 1408358900. Its totient is φ = 650011788.

The previous prime is 975017591. The next prime is 975017767. The reversal of 975017691 is 196710579.

It is not a de Polignac number, because 975017691 - 2⁹ = 975017179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (975017191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54167641 + ... + 54167658.

Almost surely, 2^975017691 is an apocalyptic number.

975017691 is a deficient number, since it is larger than the sum of its proper divisors (433341209).

975017691 is a wasteful number, since it uses less digits than its factorization.

975017691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108335305 (or 108335302 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The square root of 975017691 is about 31225.2732734239. The cubic root of 975017691 is about 991.6022386816.

The spelling of 975017691 in words is "nine hundred seventy-five million, seventeen thousand, six hundred ninety-one".