64625774 has 4 divisors (see below), whose sum is σ = 96938664. Its totient is φ = 32312886.

The previous prime is 64625767. The next prime is 64625797. The reversal of 64625774 is 47752646.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16156442 + ... + 16156445.

It is an arithmetic number, because the mean of its divisors is an integer number (24234666).

Almost surely, 2^64625774 is an apocalyptic number.

64625774 is a deficient number, since it is larger than the sum of its proper divisors (32312890).

64625774 is a wasteful number, since it uses less digits than its factorization.

64625774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32312889.

The product of its digits is 282240, while the sum is 41.

The square root of 64625774 is about 8039.0157357726. The cubic root of 64625774 is about 401.2994697080.

The spelling of 64625774 in words is "sixty-four million, six hundred twenty-five thousand, seven hundred seventy-four".