64719367 has 2 divisors, whose sum is σ = 64719368. Its totient is φ = 64719366.

The previous prime is 64719359. The next prime is 64719379. The reversal of 64719367 is 76391746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64719367 - 2³ = 64719359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64719667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32359683 + 32359684.

It is an arithmetic number, because the mean of its divisors is an integer number (32359684).

Almost surely, 2^64719367 is an apocalyptic number.

64719367 is a deficient number, since it is larger than the sum of its proper divisors (1).

64719367 is an equidigital number, since it uses as much as digits as its factorization.

64719367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 43.

The square root of 64719367 is about 8044.8348025301. The cubic root of 64719367 is about 401.4931009393.

The spelling of 64719367 in words is "sixty-four million, seven hundred nineteen thousand, three hundred sixty-seven".