73671564 has 12 divisors (see below), whose sum is σ = 171900344. Its totient is φ = 24557184.

The previous prime is 73671539. The next prime is 73671583. The reversal of 73671564 is 46517637.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069637 + ... + 3069660.

Almost surely, 2^73671564 is an apocalyptic number.

It is an amenable number.

73671564 is an abundant number, since it is smaller than the sum of its proper divisors (98228780).

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

73671564 is a wasteful number, since it uses less digits than its factorization.

73671564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139304 (or 6139302 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 73671564 is about 8583.2140833140. The cubic root of 73671564 is about 419.2116049052.

The spelling of 73671564 in words is "seventy-three million, six hundred seventy-one thousand, five hundred sixty-four".