73456656 has 160 divisors (see below), whose sum is σ = 237984768. Its totient is φ = 19008000.

The previous prime is 73456651. The next prime is 73456657. The reversal of 73456656 is 65665437.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (73456651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292531 + ... + 292781.

Almost surely, 2^73456656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73456656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118992384).

73456656 is an abundant number, since it is smaller than the sum of its proper divisors (164528112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73456656 is a wasteful number, since it uses less digits than its factorization.

73456656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 73456656 is about 8570.6858535359. The cubic root of 73456656 is about 418.8035792139.

The spelling of 73456656 in words is "seventy-three million, four hundred fifty-six thousand, six hundred fifty-six".