64374619 has 2 divisors, whose sum is σ = 64374620. Its totient is φ = 64374618.

The previous prime is 64374613. The next prime is 64374647. The reversal of 64374619 is 91647346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64374619 - 2¹¹ = 64372571 is a prime.

It is a super-2 number, since 2×64374619² = 8288183142790322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64374613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32187309 + 32187310.

It is an arithmetic number, because the mean of its divisors is an integer number (32187310).

Almost surely, 2^64374619 is an apocalyptic number.

64374619 is a deficient number, since it is larger than the sum of its proper divisors (1).

64374619 is an equidigital number, since it uses as much as digits as its factorization.

64374619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 64374619 is about 8023.3795248636. The cubic root of 64374619 is about 400.7789384028.

The spelling of 64374619 in words is "sixty-four million, three hundred seventy-four thousand, six hundred nineteen".