64982975 has 24 divisors (see below), whose sum is σ = 83804160. Its totient is φ = 49932000.

The previous prime is 64982969. The next prime is 64982977. The reversal of 64982975 is 57928946.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64982975 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64982977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147806 + ... + 148244.

It is an arithmetic number, because the mean of its divisors is an integer number (3491840).

Almost surely, 2^64982975 is an apocalyptic number.

64982975 is a deficient number, since it is larger than the sum of its proper divisors (18821185).

64982975 is a wasteful number, since it uses less digits than its factorization.

64982975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 666 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 64982975 is about 8061.2018334737. The cubic root of 64982975 is about 402.0374687649.

The spelling of 64982975 in words is "sixty-four million, nine hundred eighty-two thousand, nine hundred seventy-five".