690248608 has 24 divisors (see below), whose sum is σ = 1553059872. Its totient is φ = 295820736.

The previous prime is 690248567. The next prime is 690248617. The reversal of 690248608 is 806842096.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540510 + ... + 1540957.

It is an arithmetic number, because the mean of its divisors is an integer number (64710828).

Almost surely, 2^690248608 is an apocalyptic number.

It is an amenable number.

690248608 is an abundant number, since it is smaller than the sum of its proper divisors (862811264).

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

690248608 is a wasteful number, since it uses less digits than its factorization.

690248608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081484 (or 3081476 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 690248608 is about 26272.5828193575. The cubic root of 690248608 is about 883.7617069605.

The spelling of 690248608 in words is "six hundred ninety million, two hundred forty-eight thousand, six hundred eight".