699912 has 24 divisors (see below), whose sum is σ = 1895790. Its totient is φ = 233280.

The previous prime is 699863. The next prime is 699931. The reversal of 699912 is 219996.

It can be written as a sum of positive squares in only one way, i.e., 695556 + 4356 = 834^2 + 66^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

699912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4789 + ... + 4932.

2⁶⁹⁹⁹¹² is an apocalyptic number.

It is an amenable number.

699912 is an abundant number, since it is smaller than the sum of its proper divisors (1195878).

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

699912 is a wasteful number, since it uses less digits than its factorization.

699912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733 (or 9726 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 699912 is about 836.6074348223. The cubic root of 699912 is about 88.7866792778.

The spelling of 699912 in words is "six hundred ninety-nine thousand, nine hundred twelve".