64921676 has 12 divisors (see below), whose sum is σ = 113686608. Its totient is φ = 32439792.

The previous prime is 64921669. The next prime is 64921693. The reversal of 64921676 is 67612946.

64921676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3185 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (9473884).

Almost surely, 2^64921676 is an apocalyptic number.

It is an amenable number.

64921676 is a deficient number, since it is larger than the sum of its proper divisors (48764932).

64921676 is a wasteful number, since it uses less digits than its factorization.

64921676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528 (or 10526 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 64921676 is about 8057.3988358527. The cubic root of 64921676 is about 401.9110138589.

The spelling of 64921676 in words is "sixty-four million, nine hundred twenty-one thousand, six hundred seventy-six".