64264657 has 2 divisors, whose sum is σ = 64264658. Its totient is φ = 64264656.

The previous prime is 64264639. The next prime is 64264663. The reversal of 64264657 is 75646246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33362176 + 30902481 = 5776^2 + 5559^2 .

It is a cyclic number.

It is not a de Polignac number, because 64264657 - 2¹¹ = 64262609 is a prime.

It is a super-2 number, since 2×64264657² = 8259892278655298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64264357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32132328 + 32132329.

It is an arithmetic number, because the mean of its divisors is an integer number (32132329).

Almost surely, 2^64264657 is an apocalyptic number.

It is an amenable number.

64264657 is a deficient number, since it is larger than the sum of its proper divisors (1).

64264657 is an equidigital number, since it uses as much as digits as its factorization.

64264657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 64264657 is about 8016.5239973445. The cubic root of 64264657 is about 400.5506104725.

The spelling of 64264657 in words is "sixty-four million, two hundred sixty-four thousand, six hundred fifty-seven".