213764604 has 12 divisors (see below), whose sum is σ = 498784104. Its totient is φ = 71254864.

The previous prime is 213764569. The next prime is 213764609. The reversal of 213764604 is 406467312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213764609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8906847 + ... + 8906870.

It is an arithmetic number, because the mean of its divisors is an integer number (41565342).

Almost surely, 2^213764604 is an apocalyptic number.

It is an amenable number.

213764604 is an abundant number, since it is smaller than the sum of its proper divisors (285019500).

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

213764604 is a wasteful number, since it uses less digits than its factorization.

213764604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17813724 (or 17813722 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 213764604 is about 14620.6909549446. The cubic root of 213764604 is about 597.9230073544.

The spelling of 213764604 in words is "two hundred thirteen million, seven hundred sixty-four thousand, six hundred four".