690672 has 20 divisors (see below), whose sum is σ = 1784360. Its totient is φ = 230208.

The previous prime is 690661. The next prime is 690673. The reversal of 690672 is 276096.

It is a super-3 number, since 3×690672³ = 988409258047033344, which contains 333 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690673) by changing a digit.

690672 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, 7147 + ... + 7242.

It is an arithmetic number, because the mean of its divisors is an integer number (89218).

2⁶⁹⁰⁶⁷² is an apocalyptic number.

It is an amenable number.

690672 is an abundant number, since it is smaller than the sum of its proper divisors (1093688).

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

690672 is a wasteful number, since it uses less digits than its factorization.

690672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14400 (or 14394 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 690672 is about 831.0667843200. The cubic root of 690672 is about 88.3942367065.

The spelling of 690672 in words is "six hundred ninety thousand, six hundred seventy-two".