694407023 has 2 divisors, whose sum is σ = 694407024. Its totient is φ = 694407022.

The previous prime is 694407019. The next prime is 694407067. The reversal of 694407023 is 320704496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 694407023 - 2² = 694407019 is a prime.

It is a super-2 number, since 2×694407023² = 964402227183445058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694400023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347203511 + 347203512.

It is an arithmetic number, because the mean of its divisors is an integer number (347203512).

Almost surely, 2^694407023 is an apocalyptic number.

694407023 is a deficient number, since it is larger than the sum of its proper divisors (1).

694407023 is an equidigital number, since it uses as much as digits as its factorization.

694407023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 694407023 is about 26351.6038031844. The cubic root of 694407023 is about 885.5329008790.

The spelling of 694407023 in words is "six hundred ninety-four million, four hundred seven thousand, twenty-three".