64634974 has 8 divisors (see below), whose sum is σ = 97031880. Its totient is φ = 32291016.

The previous prime is 64634959. The next prime is 64634987. The reversal of 64634974 is 47943646.

64634974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64634974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10029 + ... + 15160.

It is an arithmetic number, because the mean of its divisors is an integer number (12128985).

Almost surely, 2^64634974 is an apocalyptic number.

64634974 is a deficient number, since it is larger than the sum of its proper divisors (32396906).

64634974 is a wasteful number, since it uses less digits than its factorization.

64634974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26474.

The product of its digits is 435456, while the sum is 43.

The square root of 64634974 is about 8039.5879247633. The cubic root of 64634974 is about 401.3185115429.

The spelling of 64634974 in words is "sixty-four million, six hundred thirty-four thousand, nine hundred seventy-four".