699845680 has 60 divisors (see below), whose sum is σ = 1654956576. Its totient is φ = 275232000.

The previous prime is 699845659. The next prime is 699845737. The reversal of 699845680 is 86548996.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296505 + ... + 298855.

Almost surely, 2^699845680 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 699845680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827478288).

699845680 is an abundant number, since it is smaller than the sum of its proper divisors (955110896).

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

699845680 is a wasteful number, since it uses less digits than its factorization.

699845680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The square root of 699845680 is about 26454.5965760206. The cubic root of 699845680 is about 887.8387486874.

The spelling of 699845680 in words is "six hundred ninety-nine million, eight hundred forty-five thousand, six hundred eighty".