690732 has 36 divisors (see below), whose sum is σ = 1996176. Its totient is φ = 197280.

The previous prime is 690721. The next prime is 690757. The reversal of 690732 is 237096.

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

It is a super-2 number, since 2×690732² = 954221391648, which contains 22 as substring.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 690696 and 690705.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1119 + ... + 1622.

2⁶⁹⁰⁷³² is an apocalyptic number.

It is an amenable number.

690732 is an abundant number, since it is smaller than the sum of its proper divisors (1305444).

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

690732 is a wasteful number, since it uses less digits than its factorization.

690732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2753 counting only the distinct ones).

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

The square root of 690732 is about 831.1028817180. The cubic root of 690732 is about 88.3967962913.

The spelling of 690732 in words is "six hundred ninety thousand, seven hundred thirty-two".