694474993 has 2 divisors, whose sum is σ = 694474994. Its totient is φ = 694474992.

The previous prime is 694474987. The next prime is 694475003. The reversal of 694474993 is 399474496.

694474993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 694427904 + 47089 = 26352^2 + 217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694474993 is a prime.

It is not a weakly prime, because it can be changed into another prime (694474943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347237496 + 347237497.

It is an arithmetic number, because the mean of its divisors is an integer number (347237497).

Almost surely, 2^694474993 is an apocalyptic number.

It is an amenable number.

694474993 is a deficient number, since it is larger than the sum of its proper divisors (1).

694474993 is an equidigital number, since it uses as much as digits as its factorization.

694474993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The square root of 694474993 is about 26352.8934464510. The cubic root of 694474993 is about 885.5617925355.

The spelling of 694474993 in words is "six hundred ninety-four million, four hundred seventy-four thousand, nine hundred ninety-three".