699985 has 24 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 464640.

The previous prime is 699967. The next prime is 700001. The reversal of 699985 is 589996.

It is a happy number.

699985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1089 + 698896 = 33^2 + 836^2 .

It is not a de Polignac number, because 699985 - 2⁵ = 699953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7821 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁶⁹⁹⁹⁸⁵ is an apocalyptic number.

699985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

699985 is a deficient number, since it is larger than the sum of its proper divisors (305495).

699985 is a wasteful number, since it uses less digits than its factorization.

699985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 118 counting only the distinct ones).

The product of its digits is 174960, while the sum is 46.

The square root of 699985 is about 836.6510622715. The cubic root of 699985 is about 88.7897659526.

The spelling of 699985 in words is "six hundred ninety-nine thousand, nine hundred eighty-five".