690669297 has 12 divisors (see below), whose sum is σ = 1001430144. Its totient is φ = 458693880.

The previous prime is 690669293. The next prime is 690669337. The reversal of 690669297 is 792966096.

It is a happy number.

690669297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690669297 - 2² = 690669293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690669293) 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, 143529 + ... + 148262.

It is an arithmetic number, because the mean of its divisors is an integer number (83452512).

Almost surely, 2^690669297 is an apocalyptic number.

It is an amenable number.

690669297 is a deficient number, since it is larger than the sum of its proper divisors (310760847).

690669297 is a wasteful number, since it uses less digits than its factorization.

690669297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292060 (or 292057 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 690669297 is about 26280.5878358913. The cubic root of 690669297 is about 883.9412139372.

The spelling of 690669297 in words is "six hundred ninety million, six hundred sixty-nine thousand, two hundred ninety-seven".