202320664 has 64 divisors (see below), whose sum is σ = 491500800. Its totient is φ = 75821184.

The previous prime is 202320661. The next prime is 202320697. The reversal of 202320664 is 466023202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202320661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6519 + ... + 21145.

It is an arithmetic number, because the mean of its divisors is an integer number (7679700).

Almost surely, 2^202320664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202320664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245750400).

202320664 is an abundant number, since it is smaller than the sum of its proper divisors (289180136).

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

202320664 is a wasteful number, since it uses less digits than its factorization.

202320664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14672 (or 14668 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 202320664 is about 14223.9468502944. The cubic root of 202320664 is about 587.0567427036.

Adding to 202320664 its reverse (466023202), we get a palindrome (668343866).

The spelling of 202320664 in words is "two hundred two million, three hundred twenty thousand, six hundred sixty-four".