690240584 has 16 divisors (see below), whose sum is σ = 1411855920. Its totient is φ = 313745680.

The previous prime is 690240583. The next prime is 690240599. The reversal of 690240584 is 485042096.

It is a super-2 number, since 2×690240584² = 952864127601322112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690240583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3921734 + ... + 3921909.

It is an arithmetic number, because the mean of its divisors is an integer number (88240995).

Almost surely, 2^690240584 is an apocalyptic number.

It is an amenable number.

690240584 is an abundant number, since it is smaller than the sum of its proper divisors (721615336).

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

690240584 is a wasteful number, since it uses less digits than its factorization.

690240584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843660 (or 7843656 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 690240584 is about 26272.4301121918. The cubic root of 690240584 is about 883.7582824304.

The spelling of 690240584 in words is "six hundred ninety million, two hundred forty thousand, five hundred eighty-four".