690012 has 24 divisors (see below), whose sum is σ = 1789200. Its totient is φ = 229968.

The previous prime is 689987. The next prime is 690037. The reversal of 690012 is 210096.

690012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (689987) and next prime (690037).

It is a super-2 number, since 2×690012² = 952233120288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

690012 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 7 ways as a sum of consecutive naturals, for example, 3087 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (74550).

2⁶⁹⁰⁰¹² is an apocalyptic number.

It is an amenable number.

690012 is an abundant number, since it is smaller than the sum of its proper divisors (1099188).

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

690012 is a wasteful number, since it uses less digits than its factorization.

690012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 690012 is about 830.6696094116. The cubic root of 690012 is about 88.3660714852.

The spelling of 690012 in words is "six hundred ninety thousand, twelve".