64996291 has 2 divisors, whose sum is σ = 64996292. Its totient is φ = 64996290.

The previous prime is 64996277. The next prime is 64996307. The reversal of 64996291 is 19269946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64996291 - 2⁵ = 64996259 is a prime.

It is not a weakly prime, because it can be changed into another prime (64996271) 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, 32498145 + 32498146.

It is an arithmetic number, because the mean of its divisors is an integer number (32498146).

Almost surely, 2^64996291 is an apocalyptic number.

64996291 is a deficient number, since it is larger than the sum of its proper divisors (1).

64996291 is an equidigital number, since it uses as much as digits as its factorization.

64996291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 64996291 is about 8062.0277226018. The cubic root of 64996291 is about 402.0649280869.

The spelling of 64996291 in words is "sixty-four million, nine hundred ninety-six thousand, two hundred ninety-one".