690438130 has 16 divisors (see below), whose sum is σ = 1276378200. Its totient is φ = 268710912.

The previous prime is 690438083. The next prime is 690438157. The reversal of 690438130 is 31834096.

It can be written as a sum of positive squares in 4 ways, for example, as 496977849 + 193460281 = 22293^2 + 13909^2 .

It is a super-2 number, since 2×690438130² = 953409622715793800, which contains 22 as substring.

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, 932655 + ... + 933394.

Almost surely, 2^690438130 is an apocalyptic number.

690438130 is a deficient number, since it is larger than the sum of its proper divisors (585940070).

690438130 is a wasteful number, since it uses less digits than its factorization.

690438130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866093.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 690438130 is about 26276.1894117088. The cubic root of 690438130 is about 883.8425845637.

The spelling of 690438130 in words is "six hundred ninety million, four hundred thirty-eight thousand, one hundred thirty".