690313608 has 24 divisors (see below), whose sum is σ = 1869599550. Its totient is φ = 230104512.

The previous prime is 690313607. The next prime is 690313619. The reversal of 690313608 is 806313096.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 381889764 + 308423844 = 19542^2 + 17562^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (690313601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4793773 + ... + 4793916.

Almost surely, 2^690313608 is an apocalyptic number.

It is an amenable number.

690313608 is an abundant number, since it is smaller than the sum of its proper divisors (1179285942).

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

690313608 is a wasteful number, since it uses less digits than its factorization.

690313608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587701 (or 9587694 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 690313608 is about 26273.8198212593. The cubic root of 690313608 is about 883.7894470661.

The spelling of 690313608 in words is "six hundred ninety million, three hundred thirteen thousand, six hundred eight".