64374809 has 8 divisors (see below), whose sum is σ = 67440000. Its totient is φ = 61366032.

The previous prime is 64374787. The next prime is 64374811. The reversal of 64374809 is 90847346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64374809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64374829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11759 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (8430000).

Almost surely, 2^64374809 is an apocalyptic number.

It is an amenable number.

64374809 is a deficient number, since it is larger than the sum of its proper divisors (3065191).

64374809 is a wasteful number, since it uses less digits than its factorization.

64374809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28207.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 64374809 is about 8023.3913652520. The cubic root of 64374809 is about 400.7793326986.

The spelling of 64374809 in words is "sixty-four million, three hundred seventy-four thousand, eight hundred nine".