213166604 has 24 divisors (see below), whose sum is σ = 451412640. Its totient is φ = 85982976.

The previous prime is 213166561. The next prime is 213166607. The reversal of 213166604 is 406661312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213166607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223439 + ... + 224390.

It is an arithmetic number, because the mean of its divisors is an integer number (18808860).

Almost surely, 2^213166604 is an apocalyptic number.

It is an amenable number.

213166604 is an abundant number, since it is smaller than the sum of its proper divisors (238246036).

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

213166604 is a wasteful number, since it uses less digits than its factorization.

213166604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447857 (or 447855 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 213166604 is about 14600.2261626319. The cubic root of 213166604 is about 597.3649294655.

The spelling of 213166604 in words is "two hundred thirteen million, one hundred sixty-six thousand, six hundred four".