64665374 has 8 divisors (see below), whose sum is σ = 101215440. Its totient is φ = 30926896.

The previous prime is 64665347. The next prime is 64665407. The reversal of 64665374 is 47356646.

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

It is a super-2 number, since 2×64665374² = 8363221189119752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702839 + ... + 702930.

It is an arithmetic number, because the mean of its divisors is an integer number (12651930).

Almost surely, 2^64665374 is an apocalyptic number.

64665374 is a deficient number, since it is larger than the sum of its proper divisors (36550066).

64665374 is a wasteful number, since it uses less digits than its factorization.

64665374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405794.

The product of its digits is 362880, while the sum is 41.

The square root of 64665374 is about 8041.4783466723. The cubic root of 64665374 is about 401.3814195414.

The spelling of 64665374 in words is "sixty-four million, six hundred sixty-five thousand, three hundred seventy-four".