64761628 has 6 divisors (see below), whose sum is σ = 113332856. Its totient is φ = 32380812.

The previous prime is 64761623. The next prime is 64761659. The reversal of 64761628 is 82616746.

It is a super-2 number, since 2×64761628² = 8388136922420768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64761623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8095200 + ... + 8095207.

Almost surely, 2^64761628 is an apocalyptic number.

It is an amenable number.

64761628 is a deficient number, since it is larger than the sum of its proper divisors (48571228).

64761628 is a wasteful number, since it uses less digits than its factorization.

64761628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16190411 (or 16190409 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 64761628 is about 8047.4609660439. The cubic root of 64761628 is about 401.5804720456.

The spelling of 64761628 in words is "sixty-four million, seven hundred sixty-one thousand, six hundred twenty-eight".