690372 has 36 divisors (see below), whose sum is σ = 1770496. Its totient is φ = 226800.

The previous prime is 690367. The next prime is 690377. The reversal of 690372 is 273096.

It is an interprime number because it is at equal distance from previous prime (690367) and next prime (690377).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×690372² = 953226996768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (690377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4497 + ... + 4647.

2⁶⁹⁰³⁷² is an apocalyptic number.

It is an amenable number.

690372 is an abundant number, since it is smaller than the sum of its proper divisors (1080124).

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

690372 is a wasteful number, since it uses less digits than its factorization.

690372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 690372 is about 830.8862738065. The cubic root of 690372 is about 88.3814365585.

The spelling of 690372 in words is "six hundred ninety thousand, three hundred seventy-two".