73664634 has 16 divisors (see below), whose sum is σ = 155083680. Its totient is φ = 23262480.

The previous prime is 73664629. The next prime is 73664641. The reversal of 73664634 is 43646637.

It is a junction number, because it is equal to n+sod(n) for n = 73664592 and 73664601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322977 + ... + 323204.

It is an arithmetic number, because the mean of its divisors is an integer number (9692730).

Almost surely, 2^73664634 is an apocalyptic number.

73664634 is an abundant number, since it is smaller than the sum of its proper divisors (81419046).

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

73664634 is a wasteful number, since it uses less digits than its factorization.

73664634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646205.

The product of its digits is 217728, while the sum is 39.

The square root of 73664634 is about 8582.8103788911. The cubic root of 73664634 is about 419.1984599532.

The spelling of 73664634 in words is "seventy-three million, six hundred sixty-four thousand, six hundred thirty-four".