64590797 has 2 divisors, whose sum is σ = 64590798. Its totient is φ = 64590796.

The previous prime is 64590791. The next prime is 64590809. The reversal of 64590797 is 79709546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61559716 + 3031081 = 7846^2 + 1741^2 .

It is a cyclic number.

It is not a de Polignac number, because 64590797 - 2¹⁸ = 64328653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64590791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32295398 + 32295399.

It is an arithmetic number, because the mean of its divisors is an integer number (32295399).

Almost surely, 2^64590797 is an apocalyptic number.

It is an amenable number.

64590797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64590797 is an equidigital number, since it uses as much as digits as its factorization.

64590797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 64590797 is about 8036.8399884532. The cubic root of 64590797 is about 401.2270590495.

The spelling of 64590797 in words is "sixty-four million, five hundred ninety thousand, seven hundred ninety-seven".