64537601 has 2 divisors, whose sum is σ = 64537602. Its totient is φ = 64537600.

The previous prime is 64537597. The next prime is 64537639. The reversal of 64537601 is 10673546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 15523600 = 7001^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 64537601 - 2² = 64537597 is a prime.

It is not a weakly prime, because it can be changed into another prime (64537201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32268800 + 32268801.

It is an arithmetic number, because the mean of its divisors is an integer number (32268801).

Almost surely, 2^64537601 is an apocalyptic number.

It is an amenable number.

64537601 is a deficient number, since it is larger than the sum of its proper divisors (1).

64537601 is an equidigital number, since it uses as much as digits as its factorization.

64537601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 64537601 is about 8033.5297970444. The cubic root of 64537601 is about 401.1168806250.

The spelling of 64537601 in words is "sixty-four million, five hundred thirty-seven thousand, six hundred one".