64691464 has 16 divisors (see below), whose sum is σ = 121438800. Its totient is φ = 32307792.

The previous prime is 64691461. The next prime is 64691467. The reversal of 64691464 is 46419646.

64691464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64691461) and next prime (64691467).

It is not an unprimeable number, because it can be changed into a prime (64691461) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3307 + ... + 11845.

It is an arithmetic number, because the mean of its divisors is an integer number (7589925).

Almost surely, 2^64691464 is an apocalyptic number.

It is an amenable number.

64691464 is a deficient number, since it is larger than the sum of its proper divisors (56747336).

64691464 is a wasteful number, since it uses less digits than its factorization.

64691464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9492 (or 9488 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 64691464 is about 8043.1003972349. The cubic root of 64691464 is about 401.4353929564.

The spelling of 64691464 in words is "sixty-four million, six hundred ninety-one thousand, four hundred sixty-four".