64220874 has 32 divisors (see below), whose sum is σ = 137071680. Its totient is φ = 19999872.

The previous prime is 64220869. The next prime is 64220881. The reversal of 64220874 is 47802246.

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 15 ways as a sum of consecutive naturals, for example, 4464 + ... + 12180.

It is an arithmetic number, because the mean of its divisors is an integer number (4283490).

Almost surely, 2^64220874 is an apocalyptic number.

64220874 is an abundant number, since it is smaller than the sum of its proper divisors (72850806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64220874 is a wasteful number, since it uses less digits than its factorization.

64220874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 64220874 is about 8013.7927350288. The cubic root of 64220874 is about 400.4596258246.

The spelling of 64220874 in words is "sixty-four million, two hundred twenty thousand, eight hundred seventy-four".