690660896 has 12 divisors (see below), whose sum is σ = 1359738702. Its totient is φ = 345330432.

The previous prime is 690660889. The next prime is 690660899. The reversal of 690660896 is 698066096.

It can be written as a sum of positive squares in only one way, i.e., 689587600 + 1073296 = 26260^2 + 1036^2 .

It is not an unprimeable number, because it can be changed into a prime (690660899) 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 as a sum of consecutive naturals, namely, 10791545 + ... + 10791608.

Almost surely, 2^690660896 is an apocalyptic number.

It is an amenable number.

690660896 is a deficient number, since it is larger than the sum of its proper divisors (669077806).

690660896 is a wasteful number, since it uses less digits than its factorization.

690660896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21583163 (or 21583155 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 690660896 is about 26280.4280026030. The cubic root of 690660896 is about 883.9376299642.

The spelling of 690660896 in words is "six hundred ninety million, six hundred sixty thousand, eight hundred ninety-six".