975644667 has 12 divisors (see below), whose sum is σ = 1416420720. Its totient is φ = 647126928.

The previous prime is 975644641. The next prime is 975644669. The reversal of 975644667 is 766446579.

975644667 is a `hidden beast` number, since 97 + 56 + 446 + 67 = 666.

It is not a de Polignac number, because 975644667 - 2⁷ = 975644539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (975644669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273367 + ... + 276912.

It is an arithmetic number, because the mean of its divisors is an integer number (118035060).

Almost surely, 2^975644667 is an apocalyptic number.

975644667 is a deficient number, since it is larger than the sum of its proper divisors (440776053).

975644667 is a wasteful number, since it uses less digits than its factorization.

975644667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550482 (or 550479 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The square root of 975644667 is about 31235.3112198358. The cubic root of 975644667 is about 991.8147399852.

The spelling of 975644667 in words is "nine hundred seventy-five million, six hundred forty-four thousand, six hundred sixty-seven".