699984 has 30 divisors (see below), whose sum is σ = 1959386. Its totient is φ = 233280.

The previous prime is 699967. The next prime is 700001. The reversal of 699984 is 489996.

It is an interprime number because it is at equal distance from previous prime (699967) and next prime (700001).

It can be written as a sum of positive squares in only one way, i.e., 685584 + 14400 = 828^2 + 120^2 .

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

It is a congruent number.

It is an unprimeable number.

699984 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, 2287 + ... + 2574.

2⁶⁹⁹⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

699984 is an abundant number, since it is smaller than the sum of its proper divisors (1259402).

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

699984 is a wasteful number, since it uses less digits than its factorization.

699984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875 (or 4866 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 699984 is about 836.6504646506. The cubic root of 699984 is about 88.7897236708.

The spelling of 699984 in words is "six hundred ninety-nine thousand, nine hundred eighty-four".