213500604 has 24 divisors (see below), whose sum is σ = 498424528. Its totient is φ = 71130240.

The previous prime is 213500557. The next prime is 213500611. The reversal of 213500604 is 406005312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30384 + ... + 36744.

Almost surely, 2^213500604 is an apocalyptic number.

It is an amenable number.

213500604 is an abundant number, since it is smaller than the sum of its proper divisors (284923924).

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

213500604 is a wasteful number, since it uses less digits than its factorization.

213500604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165 (or 9163 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213500604 is about 14611.6598646423. The cubic root of 213500604 is about 597.6767603174.

Adding to 213500604 its reverse (406005312), we get a palindrome (619505916).

The spelling of 213500604 in words is "two hundred thirteen million, five hundred thousand, six hundred four".