73442664 has 24 divisors (see below), whose sum is σ = 198907410. Its totient is φ = 24480864.

The previous prime is 73442659. The next prime is 73442687. The reversal of 73442664 is 46624437.

It can be written as a sum of positive squares in only one way, i.e., 71064900 + 2377764 = 8430^2 + 1542^2 .

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

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 5 ways as a sum of consecutive naturals, for example, 509947 + ... + 510090.

Almost surely, 2^73442664 is an apocalyptic number.

It is an amenable number.

73442664 is an abundant number, since it is smaller than the sum of its proper divisors (125464746).

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

73442664 is a wasteful number, since it uses less digits than its factorization.

73442664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020049 (or 1020042 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 73442664 is about 8569.8695439312. The cubic root of 73442664 is about 418.7769863354.

The spelling of 73442664 in words is "seventy-three million, four hundred forty-two thousand, six hundred sixty-four".