690345516 has 72 divisors (see below), whose sum is σ = 1879985856. Its totient is φ = 196590240.

The previous prime is 690345497. The next prime is 690345517. The reversal of 690345516 is 615543096.

It is a super-2 number, since 2×690345516² = 953153862922612512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690345517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192855 + ... + 196401.

Almost surely, 2^690345516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690345516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939992928).

690345516 is an abundant number, since it is smaller than the sum of its proper divisors (1189640340).

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

690345516 is a wasteful number, since it uses less digits than its factorization.

690345516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899 (or 3890 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 690345516 is about 26274.4270346662. The cubic root of 690345516 is about 883.8030638333.

The spelling of 690345516 in words is "six hundred ninety million, three hundred forty-five thousand, five hundred sixteen".