64375397 has 2 divisors, whose sum is σ = 64375398. Its totient is φ = 64375396.

The previous prime is 64375393. The next prime is 64375427. The reversal of 64375397 is 79357346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41036836 + 23338561 = 6406^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 64375397 - 2² = 64375393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64375393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32187698 + 32187699.

It is an arithmetic number, because the mean of its divisors is an integer number (32187699).

Almost surely, 2^64375397 is an apocalyptic number.

It is an amenable number.

64375397 is a deficient number, since it is larger than the sum of its proper divisors (1).

64375397 is an equidigital number, since it uses as much as digits as its factorization.

64375397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 44.

The square root of 64375397 is about 8023.4280080275. The cubic root of 64375397 is about 400.7805529354.

The spelling of 64375397 in words is "sixty-four million, three hundred seventy-five thousand, three hundred ninety-seven".