64427974 has 32 divisors (see below), whose sum is σ = 112260960. Its totient is φ = 27475200.

The previous prime is 64427971. The next prime is 64427983. The reversal of 64427974 is 47972446.

It is a self number, because there is not a number n which added to its sum of digits gives 64427974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64427971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18664 + ... + 21844.

It is an arithmetic number, because the mean of its divisors is an integer number (3508155).

Almost surely, 2^64427974 is an apocalyptic number.

64427974 is a deficient number, since it is larger than the sum of its proper divisors (47832986).

64427974 is a wasteful number, since it uses less digits than its factorization.

64427974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256.

The product of its digits is 338688, while the sum is 43.

The square root of 64427974 is about 8026.7038066693. The cubic root of 64427974 is about 400.8896324185.

The spelling of 64427974 in words is "sixty-four million, four hundred twenty-seven thousand, nine hundred seventy-four".