64996271 has 2 divisors, whose sum is σ = 64996272. Its totient is φ = 64996270.

The previous prime is 64996259. The next prime is 64996277. The reversal of 64996271 is 17269946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64996271 - 2²² = 60801967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64996277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32498135 + 32498136.

It is an arithmetic number, because the mean of its divisors is an integer number (32498136).

Almost surely, 2^64996271 is an apocalyptic number.

64996271 is a deficient number, since it is larger than the sum of its proper divisors (1).

64996271 is an equidigital number, since it uses as much as digits as its factorization.

64996271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 64996271 is about 8062.0264822190. The cubic root of 64996271 is about 402.0648868471.

The spelling of 64996271 in words is "sixty-four million, nine hundred ninety-six thousand, two hundred seventy-one".