687234204 has 36 divisors (see below), whose sum is σ = 1812706896. Its totient is φ = 219117888.

The previous prime is 687234203. The next prime is 687234221. The reversal of 687234204 is 402432786.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×687234204² = 944581702295027232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687234203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414169 + ... + 415824.

Almost surely, 2^687234204 is an apocalyptic number.

It is an amenable number.

687234204 is an abundant number, since it is smaller than the sum of its proper divisors (1125472692).

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

687234204 is a wasteful number, since it uses less digits than its factorization.

687234204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830026 (or 830021 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 687234204 is about 26215.1521834225. The cubic root of 687234204 is about 882.4733294778.

It can be divided in two parts, 68723 and 4204, that added together give a palindrome (72927).

The spelling of 687234204 in words is "six hundred eighty-seven million, two hundred thirty-four thousand, two hundred four".