690507 has 12 divisors (see below), whose sum is σ = 1012024. Its totient is φ = 453600.

The previous prime is 690493. The next prime is 690509. The reversal of 690507 is 705096.

It is not a de Polignac number, because 690507 - 2⁴ = 690491 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132 + ... + 1182.

2⁶⁹⁰⁵⁰⁷ is an apocalyptic number.

690507 is a deficient number, since it is larger than the sum of its proper divisors (321517).

690507 is a wasteful number, since it uses less digits than its factorization.

690507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 690507 is about 830.9675083901. The cubic root of 690507 is about 88.3871970839.

The spelling of 690507 in words is "six hundred ninety thousand, five hundred seven".