64351967 has 2 divisors, whose sum is σ = 64351968. Its totient is φ = 64351966.

The previous prime is 64351961. The next prime is 64351981. The reversal of 64351967 is 76915346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64351967 - 2⁸ = 64351711 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64351961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32175983 + 32175984.

It is an arithmetic number, because the mean of its divisors is an integer number (32175984).

Almost surely, 2^64351967 is an apocalyptic number.

64351967 is a deficient number, since it is larger than the sum of its proper divisors (1).

64351967 is an equidigital number, since it uses as much as digits as its factorization.

64351967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 64351967 is about 8021.9677760510. The cubic root of 64351967 is about 400.7319244828.

The spelling of 64351967 in words is "sixty-four million, three hundred fifty-one thousand, nine hundred sixty-seven".