690907 has 8 divisors (see below), whose sum is σ = 799200. Its totient is φ = 585024.

The previous prime is 690889. The next prime is 690919. The reversal of 690907 is 709096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690907 - 2¹⁵ = 658139 is a prime.

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

It is a Duffinian number.

690907 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (690997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (99900).

2⁶⁹⁰⁹⁰⁷ is an apocalyptic number.

690907 is a deficient number, since it is larger than the sum of its proper divisors (108293).

690907 is a wasteful number, since it uses less digits than its factorization.

690907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 690907 is about 831.2081568416. The cubic root of 690907 is about 88.4042609004.

The spelling of 690907 in words is "six hundred ninety thousand, nine hundred seven".