699969 has 4 divisors (see below), whose sum is σ = 933296. Its totient is φ = 466644.

The previous prime is 699967. The next prime is 700001. The reversal of 699969 is 969996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 699969 - 2¹ = 699967 is a prime.

It is a super-2 number, since 2×699969² = 979913201922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699969.

It is not an unprimeable number, because it can be changed into a prime (699961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116659 + ... + 116664.

It is an arithmetic number, because the mean of its divisors is an integer number (233324).

2⁶⁹⁹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

699969 is a deficient number, since it is larger than the sum of its proper divisors (233327).

699969 is a wasteful number, since it uses less digits than its factorization.

699969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233326.

The product of its digits is 236196, while the sum is 48.

The square root of 699969 is about 836.6415002855. The cubic root of 699969 is about 88.7890894395.

The spelling of 699969 in words is "six hundred ninety-nine thousand, nine hundred sixty-nine".