694867913 has 2 divisors, whose sum is σ = 694867914. Its totient is φ = 694867912.

The previous prime is 694867889. The next prime is 694867919. The reversal of 694867913 is 319768496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600642064 + 94225849 = 24508^2 + 9707^2 .

It is a cyclic number.

It is not a de Polignac number, because 694867913 - 2¹⁰ = 694866889 is a prime.

It is not a weakly prime, because it can be changed into another prime (694867919) 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, 347433956 + 347433957.

It is an arithmetic number, because the mean of its divisors is an integer number (347433957).

Almost surely, 2^694867913 is an apocalyptic number.

It is an amenable number.

694867913 is a deficient number, since it is larger than the sum of its proper divisors (1).

694867913 is an equidigital number, since it uses as much as digits as its factorization.

694867913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 694867913 is about 26360.3473611407. The cubic root of 694867913 is about 885.7287720724.

The spelling of 694867913 in words is "six hundred ninety-four million, eight hundred sixty-seven thousand, nine hundred thirteen".