694164433 has 2 divisors, whose sum is σ = 694164434. Its totient is φ = 694164432.

The previous prime is 694164413. The next prime is 694164439. The reversal of 694164433 is 334461496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384826689 + 309337744 = 19617^2 + 17588^2 .

It is a cyclic number.

It is not a de Polignac number, because 694164433 - 2²⁵ = 660610001 is a prime.

It is a super-2 number, since 2×694164433² = 963728520084422978, which contains 22 as substring.

It is equal to p_35966308 and since 694164433 and 35966308 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (694164439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347082216 + 347082217.

It is an arithmetic number, because the mean of its divisors is an integer number (347082217).

Almost surely, 2^694164433 is an apocalyptic number.

It is an amenable number.

694164433 is a deficient number, since it is larger than the sum of its proper divisors (1).

694164433 is an equidigital number, since it uses as much as digits as its factorization.

694164433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 40.

The square root of 694164433 is about 26347.0004554598. Note that the first 3 decimals coincide. The cubic root of 694164433 is about 885.4297690269.

The spelling of 694164433 in words is "six hundred ninety-four million, one hundred sixty-four thousand, four hundred thirty-three".