975123613 has 4 divisors (see below), whose sum is σ = 991109308. Its totient is φ = 959137920.

The previous prime is 975123581. The next prime is 975123647. The reversal of 975123613 is 316321579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316321579 = 7 ⋅45188797.

It can be written as a sum of positive squares in 2 ways, for example, as 464273209 + 510850404 = 21547^2 + 22602^2 .

It is a cyclic number.

It is not a de Polignac number, because 975123613 - 2⁵ = 975123581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (975123313) 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, 7992756 + ... + 7992877.

It is an arithmetic number, because the mean of its divisors is an integer number (247777327).

Almost surely, 2^975123613 is an apocalyptic number.

It is an amenable number.

975123613 is a deficient number, since it is larger than the sum of its proper divisors (15985695).

975123613 is a wasteful number, since it uses less digits than its factorization.

975123613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15985694.

The product of its digits is 34020, while the sum is 37.

The square root of 975123613 is about 31226.9693214055. The cubic root of 975123613 is about 991.6381452742.

The spelling of 975123613 in words is "nine hundred seventy-five million, one hundred twenty-three thousand, six hundred thirteen".