64992841 has 2 divisors, whose sum is σ = 64992842. Its totient is φ = 64992840.

The previous prime is 64992791. The next prime is 64992847. The reversal of 64992841 is 14829946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64963600 + 29241 = 8060^2 + 171^2 .

It is a cyclic number.

It is not a de Polignac number, because 64992841 - 2⁷ = 64992713 is a prime.

It is not a weakly prime, because it can be changed into another prime (64992847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32496420 + 32496421.

It is an arithmetic number, because the mean of its divisors is an integer number (32496421).

Almost surely, 2^64992841 is an apocalyptic number.

It is an amenable number.

64992841 is a deficient number, since it is larger than the sum of its proper divisors (1).

64992841 is an equidigital number, since it uses as much as digits as its factorization.

64992841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 64992841 is about 8061.8137537405. The cubic root of 64992841 is about 402.0578140986.

The spelling of 64992841 in words is "sixty-four million, nine hundred ninety-two thousand, eight hundred forty-one".