690088 has 16 divisors (see below), whose sum is σ = 1478880. Its totient is φ = 295728.

The previous prime is 690073. The next prime is 690089. The reversal of 690088 is 880096.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (690089) 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, 6106 + ... + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (92430).

2⁶⁹⁰⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

690088 is an abundant number, since it is smaller than the sum of its proper divisors (788792).

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

690088 is a wasteful number, since it uses less digits than its factorization.

690088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12336 (or 12332 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 690088 is about 830.7153543784. The cubic root of 690088 is about 88.3693156678.

The spelling of 690088 in words is "six hundred ninety thousand, eighty-eight".