64673764 has 9 divisors (see below), whose sum is σ = 113207241. Its totient is φ = 32328840.

The previous prime is 64673761. The next prime is 64673771. The reversal of 64673764 is 46737646.

The square root of 64673764 is 8042.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 60840000 = 1958^2 + 7800^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64673764.

It is not an unprimeable number, because it can be changed into a prime (64673761) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 14074 + ... + 18094.

Almost surely, 2^64673764 is an apocalyptic number.

64673764 is the 8042-nd square number.

It is an amenable number.

64673764 is a deficient number, since it is larger than the sum of its proper divisors (48533477).

64673764 is an frugal number, since it uses more digits than its factorization.

64673764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046 (or 4023 counting only the distinct ones).

The product of its digits is 508032, while the sum is 43.

The cubic root of 64673764 is about 401.3987778496.

The spelling of 64673764 in words is "sixty-four million, six hundred seventy-three thousand, seven hundred sixty-four".