64642174 has 8 divisors (see below), whose sum is σ = 97012368. Its totient is φ = 32304720.

The previous prime is 64642147. The next prime is 64642181. The reversal of 64642174 is 47124646.

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

It is a super-2 number, since 2×64642174² = 8357221318892552, 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, 2442 + ... + 11629.

It is an arithmetic number, because the mean of its divisors is an integer number (12126546).

Almost surely, 2^64642174 is an apocalyptic number.

64642174 is a deficient number, since it is larger than the sum of its proper divisors (32370194).

64642174 is a wasteful number, since it uses less digits than its factorization.

64642174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16370.

The product of its digits is 32256, while the sum is 34.

The square root of 64642174 is about 8040.0356964382. The cubic root of 64642174 is about 401.3334125880. Note that the first 3 decimals are identical.

The spelling of 64642174 in words is "sixty-four million, six hundred forty-two thousand, one hundred seventy-four".