975666969 has 36 divisors (see below), whose sum is σ = 1488554340. Its totient is φ = 615700800.

The previous prime is 975666919. The next prime is 975666971. The reversal of 975666969 is 969666579.

It can be written as a sum of positive squares in 2 ways, for example, as 955551744 + 20115225 = 30912^2 + 4485^2 .

It is not a de Polignac number, because 975666969 - 2⁷ = 975666841 is a prime.

It is a super-2 number, since 2×975666969² = 1903852068795293922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (975666919) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 479847 + ... + 481875.

Almost surely, 2^975666969 is an apocalyptic number.

It is an amenable number.

975666969 is a deficient number, since it is larger than the sum of its proper divisors (512887371).

975666969 is a wasteful number, since it uses less digits than its factorization.

975666969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2156 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The square root of 975666969 is about 31235.6682176002. The cubic root of 975666969 is about 991.8222971367.

The spelling of 975666969 in words is "nine hundred seventy-five million, six hundred sixty-six thousand, nine hundred sixty-nine".