64314391 has 2 divisors, whose sum is σ = 64314392. Its totient is φ = 64314390.

The previous prime is 64314361. The next prime is 64314401. The reversal of 64314391 is 19341346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64314391 - 2⁵ = 64314359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64314361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32157195 + 32157196.

It is an arithmetic number, because the mean of its divisors is an integer number (32157196).

Almost surely, 2^64314391 is an apocalyptic number.

64314391 is a deficient number, since it is larger than the sum of its proper divisors (1).

64314391 is an equidigital number, since it uses as much as digits as its factorization.

64314391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 64314391 is about 8019.6253653148. The cubic root of 64314391 is about 400.6539116663.

The spelling of 64314391 in words is "sixty-four million, three hundred fourteen thousand, three hundred ninety-one".