64393597 has 2 divisors, whose sum is σ = 64393598. Its totient is φ = 64393596.

The previous prime is 64393591. The next prime is 64393621. The reversal of 64393597 is 79539346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62394201 + 1999396 = 7899^2 + 1414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64393597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64393591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32196798 + 32196799.

It is an arithmetic number, because the mean of its divisors is an integer number (32196799).

Almost surely, 2^64393597 is an apocalyptic number.

It is an amenable number.

64393597 is a deficient number, since it is larger than the sum of its proper divisors (1).

64393597 is an equidigital number, since it uses as much as digits as its factorization.

64393597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 46.

The square root of 64393597 is about 8024.5621064330. The cubic root of 64393597 is about 400.8183184955.

The spelling of 64393597 in words is "sixty-four million, three hundred ninety-three thousand, five hundred ninety-seven".