690040172 has 6 divisors (see below), whose sum is σ = 1207570308. Its totient is φ = 345020084.

The previous prime is 690040151. The next prime is 690040177. The reversal of 690040172 is 271040096.

It is not an unprimeable number, because it can be changed into a prime (690040177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86255018 + ... + 86255025.

It is an arithmetic number, because the mean of its divisors is an integer number (201261718).

Almost surely, 2^690040172 is an apocalyptic number.

It is an amenable number.

690040172 is a deficient number, since it is larger than the sum of its proper divisors (517530136).

690040172 is a wasteful number, since it uses less digits than its factorization.

690040172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172510047 (or 172510045 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 690040172 is about 26268.6157229497. The cubic root of 690040172 is about 883.6727408025.

The spelling of 690040172 in words is "six hundred ninety million, forty thousand, one hundred seventy-two".