699680 has 24 divisors (see below), whose sum is σ = 1653372. Its totient is φ = 279808.

The previous prime is 699649. The next prime is 699697. The reversal of 699680 is 86996.

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 784 = 836^2 + 28^2 .

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, 2027 + ... + 2346.

2⁶⁹⁹⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

699680 is an abundant number, since it is smaller than the sum of its proper divisors (953692).

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

699680 is a wasteful number, since it uses less digits than its factorization.

699680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388 (or 4380 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 699680 is about 836.4687680960. The cubic root of 699680 is about 88.7768681463.

The spelling of 699680 in words is "six hundred ninety-nine thousand, six hundred eighty".