64866916 has 9 divisors (see below), whose sum is σ = 113545299. Its totient is φ = 32425404.

The previous prime is 64866913. The next prime is 64866937. The reversal of 64866916 is 61966846.

The square root of 64866916 is 8054.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64866913) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14095 + ... + 18121.

Almost surely, 2^64866916 is an apocalyptic number.

64866916 is the 8054-th square number.

It is an amenable number.

64866916 is a deficient number, since it is larger than the sum of its proper divisors (48678383).

64866916 is an frugal number, since it uses more digits than its factorization.

64866916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058 (or 4029 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The cubic root of 64866916 is about 401.7979810512.

The spelling of 64866916 in words is "sixty-four million, eight hundred sixty-six thousand, nine hundred sixteen".