690982231 has 4 divisors (see below), whose sum is σ = 697097232. Its totient is φ = 684867232.

The previous prime is 690982223. The next prime is 690982247. The reversal of 690982231 is 132289096.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690982231 - 2³ = 690982223 is a prime.

It is a super-2 number, since 2×690982231² = 954912887115474722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690982631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057331 + ... + 3057556.

It is an arithmetic number, because the mean of its divisors is an integer number (174274308).

Almost surely, 2^690982231 is an apocalyptic number.

690982231 is a deficient number, since it is larger than the sum of its proper divisors (6115001).

690982231 is a wasteful number, since it uses less digits than its factorization.

690982231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115000.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 690982231 is about 26286.5408717085. The cubic root of 690982231 is about 884.0746948445.

The spelling of 690982231 in words is "six hundred ninety million, nine hundred eighty-two thousand, two hundred thirty-one".