690052 has 12 divisors (see below), whose sum is σ = 1317456. Its totient is φ = 313640.

The previous prime is 690037. The next prime is 690059. The reversal of 690052 is 250096.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (690059) by changing a digit.

690052 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 3 ways as a sum of consecutive naturals, for example, 7798 + ... + 7885.

It is an arithmetic number, because the mean of its divisors is an integer number (109788).

2⁶⁹⁰⁰⁵² is an apocalyptic number.

It is an amenable number.

690052 is a deficient number, since it is larger than the sum of its proper divisors (627404).

690052 is a wasteful number, since it uses less digits than its factorization.

690052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698 (or 15696 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 690052 is about 830.6936860239. The cubic root of 690052 is about 88.3677789794.

The spelling of 690052 in words is "six hundred ninety thousand, fifty-two".