699880 has 16 divisors (see below), whose sum is σ = 1574820. Its totient is φ = 279936.

The previous prime is 699863. The next prime is 699931. The reversal of 699880 is 88996.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 574564 + 125316 = 758^2 + 354^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 17497 = 699880 / (6 + 9 + 9 + 8 + 8 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8709 + ... + 8788.

2⁶⁹⁹⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

699880 is an abundant number, since it is smaller than the sum of its proper divisors (874940).

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

699880 is a wasteful number, since it uses less digits than its factorization.

699880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17508 (or 17504 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 699880 is about 836.5883097438. The cubic root of 699880 is about 88.7853261472.

The spelling of 699880 in words is "six hundred ninety-nine thousand, eight hundred eighty".