690594 has 8 divisors (see below), whose sum is σ = 1381200. Its totient is φ = 230196.

The previous prime is 690589. The next prime is 690607. The reversal of 690594 is 495096.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

690594 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57544 + ... + 57555.

It is an arithmetic number, because the mean of its divisors is an integer number (172650).

2⁶⁹⁰⁵⁹⁴ is an apocalyptic number.

690594 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

690594 is a wasteful number, since it uses less digits than its factorization.

690594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115104.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 690594 is about 831.0198553585. The cubic root of 690594 is about 88.3909090247.

Subtracting from 690594 its sum of digits (33), we obtain a square (690561 = 831²).

The spelling of 690594 in words is "six hundred ninety thousand, five hundred ninety-four".