64601573 has 2 divisors, whose sum is σ = 64601574. Its totient is φ = 64601572.

The previous prime is 64601557. The next prime is 64601597. The reversal of 64601573 is 37510646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 889249 = 7982^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 64601573 - 2⁴ = 64601557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64600573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32300786 + 32300787.

It is an arithmetic number, because the mean of its divisors is an integer number (32300787).

Almost surely, 2^64601573 is an apocalyptic number.

It is an amenable number.

64601573 is a deficient number, since it is larger than the sum of its proper divisors (1).

64601573 is an equidigital number, since it uses as much as digits as its factorization.

64601573 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 64601573 is about 8037.5103732437. The cubic root of 64601573 is about 401.2493707026.

The spelling of 64601573 in words is "sixty-four million, six hundred one thousand, five hundred seventy-three".