73961564 has 6 divisors (see below), whose sum is σ = 129432744. Its totient is φ = 36980780.

The previous prime is 73961533. The next prime is 73961579. The reversal of 73961564 is 46516937.

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, 9245192 + ... + 9245199.

It is an arithmetic number, because the mean of its divisors is an integer number (21572124).

Almost surely, 2^73961564 is an apocalyptic number.

It is an amenable number.

73961564 is a deficient number, since it is larger than the sum of its proper divisors (55471180).

73961564 is a wasteful number, since it uses less digits than its factorization.

73961564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18490395 (or 18490393 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 73961564 is about 8600.0909297518. The cubic root of 73961564 is about 419.7609448374.

The spelling of 73961564 in words is "seventy-three million, nine hundred sixty-one thousand, five hundred sixty-four".