690942 has 16 divisors (see below), whose sum is σ = 1579392. Its totient is φ = 197400.

The previous prime is 690929. The next prime is 690953. The reversal of 690942 is 249096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8184 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (98712).

2⁶⁹⁰⁹⁴² is an apocalyptic number.

690942 is an abundant number, since it is smaller than the sum of its proper divisors (888450).

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

690942 is a wasteful number, since it uses less digits than its factorization.

690942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16463.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 690942 is about 831.2292102663. The cubic root of 690942 is about 88.4057536709.

It can be divided in two parts, 69094 and 2, that added together give a palindrome (69096).

The spelling of 690942 in words is "six hundred ninety thousand, nine hundred forty-two".