64996577 has 2 divisors, whose sum is σ = 64996578. Its totient is φ = 64996576.

The previous prime is 64996571. The next prime is 64996579. The reversal of 64996577 is 77569946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37075921 + 27920656 = 6089^2 + 5284^2 .

It is a cyclic number.

It is not a de Polignac number, because 64996577 - 2⁶ = 64996513 is a prime.

Together with 64996579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64996571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32498288 + 32498289.

It is an arithmetic number, because the mean of its divisors is an integer number (32498289).

Almost surely, 2^64996577 is an apocalyptic number.

It is an amenable number.

64996577 is a deficient number, since it is larger than the sum of its proper divisors (1).

64996577 is an equidigital number, since it uses as much as digits as its factorization.

64996577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 53.

The square root of 64996577 is about 8062.0454600554. The cubic root of 64996577 is about 402.0655178149.

The spelling of 64996577 in words is "sixty-four million, nine hundred ninety-six thousand, five hundred seventy-seven".