699012 has 18 divisors (see below), whose sum is σ = 1767038. Its totient is φ = 232992.

The previous prime is 699007. The next prime is 699037. The reversal of 699012 is 210996.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 331776 = 606^2 + 576^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×699012² = 977235552288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699012.

It is an unprimeable number.

699012 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, 9673 + ... + 9744.

2⁶⁹⁹⁰¹² is an apocalyptic number.

It is an amenable number.

699012 is an abundant number, since it is smaller than the sum of its proper divisors (1068026).

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

699012 is a wasteful number, since it uses less digits than its factorization.

699012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19427 (or 19422 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 699012 is about 836.0693751119. The cubic root of 699012 is about 88.7486067360.

The spelling of 699012 in words is "six hundred ninety-nine thousand, twelve".