64642214 has 32 divisors (see below), whose sum is σ = 120126720. Its totient is φ = 25404192.

The previous prime is 64642181. The next prime is 64642241. The reversal of 64642214 is 41224646.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28577 + ... + 30755.

It is an arithmetic number, because the mean of its divisors is an integer number (3753960).

Almost surely, 2^64642214 is an apocalyptic number.

64642214 is a deficient number, since it is larger than the sum of its proper divisors (55484506).

64642214 is a wasteful number, since it uses less digits than its factorization.

64642214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its digits is 9216, while the sum is 29.

The square root of 64642214 is about 8040.0381839889. The cubic root of 64642214 is about 401.3334953685. Note that the first 3 decimals are identical.

The spelling of 64642214 in words is "sixty-four million, six hundred forty-two thousand, two hundred fourteen".