690959697 has 4 divisors (see below), whose sum is σ = 921279600. Its totient is φ = 460639796.

The previous prime is 690959683. The next prime is 690959699. The reversal of 690959697 is 796959096.

690959697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690959697 - 2²⁰ = 689911121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690959697.

It is not an unprimeable number, because it can be changed into a prime (690959699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115159947 + ... + 115159952.

It is an arithmetic number, because the mean of its divisors is an integer number (230319900).

Almost surely, 2^690959697 is an apocalyptic number.

It is an amenable number.

690959697 is a deficient number, since it is larger than the sum of its proper divisors (230319903).

690959697 is a wasteful number, since it uses less digits than its factorization.

690959697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230319902.

The product of its (nonzero) digits is 8266860, while the sum is 60.

The square root of 690959697 is about 26286.1122458229. The cubic root of 690959697 is about 884.0650843920.

The spelling of 690959697 in words is "six hundred ninety million, nine hundred fifty-nine thousand, six hundred ninety-seven".