690072 has 16 divisors (see below), whose sum is σ = 1725240. Its totient is φ = 230016.

The previous prime is 690059. The next prime is 690073. The reversal of 690072 is 270096.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 28753 = 690072 / (6 + 9 + 0 + 0 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690073) 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, 14353 + ... + 14400.

2⁶⁹⁰⁰⁷² is an apocalyptic number.

It is an amenable number.

690072 is an abundant number, since it is smaller than the sum of its proper divisors (1035168).

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

690072 is a wasteful number, since it uses less digits than its factorization.

690072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28762 (or 28758 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 690072 is about 830.7057240684. The cubic root of 690072 is about 88.3686327018.

Adding to 690072 its sum of digits (24), we get a palindrome (690096).

The spelling of 690072 in words is "six hundred ninety thousand, seventy-two".