73918664 has 16 divisors (see below), whose sum is σ = 145892400. Its totient is φ = 35014032.

The previous prime is 73918661. The next prime is 73918667. The reversal of 73918664 is 46681937.

It is an interprime number because it is at equal distance from previous prime (73918661) and next prime (73918667).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (73918661) by changing a digit.

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, 243002 + ... + 243305.

It is an arithmetic number, because the mean of its divisors is an integer number (9118275).

Almost surely, 2^73918664 is an apocalyptic number.

It is an amenable number.

73918664 is a deficient number, since it is larger than the sum of its proper divisors (71973736).

73918664 is a wasteful number, since it uses less digits than its factorization.

73918664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486332 (or 486328 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 73918664 is about 8597.5964082992. The cubic root of 73918664 is about 419.6797710206.

The spelling of 73918664 in words is "seventy-three million, nine hundred eighteen thousand, six hundred sixty-four".