67520564 has 6 divisors (see below), whose sum is σ = 118160994. Its totient is φ = 33760280.

The previous prime is 67520539. The next prime is 67520611. The reversal of 67520564 is 46502576.

It can be written as a sum of positive squares in only one way, i.e., 58400164 + 9120400 = 7642^2 + 3020^2 .

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, 8440067 + ... + 8440074.

It is an arithmetic number, because the mean of its divisors is an integer number (19693499).

Almost surely, 2^67520564 is an apocalyptic number.

It is an amenable number.

67520564 is a deficient number, since it is larger than the sum of its proper divisors (50640430).

67520564 is a wasteful number, since it uses less digits than its factorization.

67520564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16880145 (or 16880143 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 67520564 is about 8217.0897524610. The cubic root of 67520564 is about 407.2039859088.

The spelling of 67520564 in words is "sixty-seven million, five hundred twenty thousand, five hundred sixty-four".