64645982 has 8 divisors (see below), whose sum is σ = 97004952. Its totient is φ = 32311000.

The previous prime is 64645979. The next prime is 64646027. The reversal of 64645982 is 28954646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 4232 + ... + 12132.

It is an arithmetic number, because the mean of its divisors is an integer number (12125619).

Almost surely, 2^64645982 is an apocalyptic number.

64645982 is a deficient number, since it is larger than the sum of its proper divisors (32358970).

64645982 is a wasteful number, since it uses less digits than its factorization.

64645982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11994.

The product of its digits is 414720, while the sum is 44.

The square root of 64645982 is about 8040.2725078196. The cubic root of 64645982 is about 401.3412931379.

The spelling of 64645982 in words is "sixty-four million, six hundred forty-five thousand, nine hundred eighty-two".