73280664 has 24 divisors (see below), whose sum is σ = 198468660. Its totient is φ = 24426864.

The previous prime is 73280657. The next prime is 73280671. The reversal of 73280664 is 46608237.

It is an interprime number because it is at equal distance from previous prime (73280657) and next prime (73280671).

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508822 + ... + 508965.

Almost surely, 2^73280664 is an apocalyptic number.

It is an amenable number.

73280664 is an abundant number, since it is smaller than the sum of its proper divisors (125187996).

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

73280664 is a wasteful number, since it uses less digits than its factorization.

73280664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017799 (or 1017792 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 73280664 is about 8560.4126068782. The cubic root of 73280664 is about 418.4688465738.

The spelling of 73280664 in words is "seventy-three million, two hundred eighty thousand, six hundred sixty-four".