694580969 has 2 divisors, whose sum is σ = 694580970. Its totient is φ = 694580968.

The previous prime is 694580941. The next prime is 694581023. The reversal of 694580969 is 969085496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369139369 + 325441600 = 19213^2 + 18040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694580969 is a prime.

It is a super-2 number, since 2×694580969² = 964885444993957922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (694580269) 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 as a sum of consecutive naturals, namely, 347290484 + 347290485.

It is an arithmetic number, because the mean of its divisors is an integer number (347290485).

Almost surely, 2^694580969 is an apocalyptic number.

It is an amenable number.

694580969 is a deficient number, since it is larger than the sum of its proper divisors (1).

694580969 is an equidigital number, since it uses as much as digits as its factorization.

694580969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The square root of 694580969 is about 26354.9040787478. The cubic root of 694580969 is about 885.6068354452.

The spelling of 694580969 in words is "six hundred ninety-four million, five hundred eighty thousand, nine hundred sixty-nine".