73055664 has 120 divisors (see below), whose sum is σ = 236248272. Its totient is φ = 20828160.

The previous prime is 73055657. The next prime is 73055683. The reversal of 73055664 is 46655037.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25572 + ... + 28284.

Almost surely, 2^73055664 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 73055664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118124136).

73055664 is an abundant number, since it is smaller than the sum of its proper divisors (163192608).

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

73055664 is a wasteful number, since it uses less digits than its factorization.

73055664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2746 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 73055664 is about 8547.2606137873. The cubic root of 73055664 is about 418.0401203831.

The spelling of 73055664 in words is "seventy-three million, fifty-five thousand, six hundred sixty-four".