73740664 has 8 divisors (see below), whose sum is σ = 138263760. Its totient is φ = 36870328.

The previous prime is 73740659. The next prime is 73740677. The reversal of 73740664 is 46604737.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4608784 + ... + 4608799.

It is an arithmetic number, because the mean of its divisors is an integer number (17282970).

Almost surely, 2^73740664 is an apocalyptic number.

It is an amenable number.

73740664 is a deficient number, since it is larger than the sum of its proper divisors (64523096).

73740664 is a wasteful number, since it uses less digits than its factorization.

73740664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217589 (or 9217585 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 73740664 is about 8587.2384385203. The cubic root of 73740664 is about 419.3426299954.

The spelling of 73740664 in words is "seventy-three million, seven hundred forty thousand, six hundred sixty-four".