690112900 has 81 divisors (see below), whose sum is σ = 1561096047. Its totient is φ = 264801600.

The previous prime is 690112877. The next prime is 690112919. The reversal of 690112900 is 9211096.

The square root of 690112900 is 26270.

It is a perfect power (a square), and thus also a powerful number.

690112900 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65512836 + 624600064 = 8094^2 + 24992^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9719865 + ... + 9719935.

Almost surely, 2^690112900 is an apocalyptic number.

690112900 is the 26270-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690112900

690112900 is an abundant number, since it is smaller than the sum of its proper divisors (870983147).

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

690112900 is a wasteful number, since it uses less digits than its factorization.

690112900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The cubic root of 690112900 is about 883.7037851271.

Adding to 690112900 its reverse (9211096), we get a palindrome (699323996).

The spelling of 690112900 in words is "six hundred ninety million, one hundred twelve thousand, nine hundred".