64212166 has 4 divisors (see below), whose sum is σ = 96318252. Its totient is φ = 32106082.

The previous prime is 64212149. The next prime is 64212167. The reversal of 64212166 is 66121246.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64212167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16053040 + ... + 16053043.

It is an arithmetic number, because the mean of its divisors is an integer number (24079563).

Almost surely, 2^64212166 is an apocalyptic number.

64212166 is a deficient number, since it is larger than the sum of its proper divisors (32106086).

64212166 is a wasteful number, since it uses less digits than its factorization.

64212166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32106085.

The product of its digits is 3456, while the sum is 28.

The square root of 64212166 is about 8013.2494033320. The cubic root of 64212166 is about 400.4415249600.

The spelling of 64212166 in words is "sixty-four million, two hundred twelve thousand, one hundred sixty-six".