694294664993 has 4 divisors (see below), whose sum is σ = 697408094208. Its totient is φ = 691181235780.

The previous prime is 694294664981. The next prime is 694294665013. The reversal of 694294664993 is 399466492496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 694294664993 - 2⁸ = 694294664737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694294664893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556714273 + ... + 1556714718.

It is an arithmetic number, because the mean of its divisors is an integer number (174352023552).

Almost surely, 2^694294664993 is an apocalyptic number.

It is an amenable number.

694294664993 is a deficient number, since it is larger than the sum of its proper divisors (3113429215).

694294664993 is a wasteful number, since it uses less digits than its factorization.

694294664993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113429214.

The product of its digits is 544195584, while the sum is 71.

The spelling of 694294664993 in words is "six hundred ninety-four billion, two hundred ninety-four million, six hundred sixty-four thousand, nine hundred ninety-three".