690322672 has 80 divisors (see below), whose sum is σ = 1534401792. Its totient is φ = 298045440.

The previous prime is 690322643. The next prime is 690322681. The reversal of 690322672 is 276223096.

690322672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696097 + ... + 697087.

Almost surely, 2^690322672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690322672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767200896).

690322672 is an abundant number, since it is smaller than the sum of its proper divisors (844079120).

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

690322672 is a wasteful number, since it uses less digits than its factorization.

690322672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 690322672 is about 26273.9923117900. The cubic root of 690322672 is about 883.7933151788.

The spelling of 690322672 in words is "six hundred ninety million, three hundred twenty-two thousand, six hundred seventy-two".