694843749107 has 4 divisors (see below), whose sum is σ = 698136847656. Its totient is φ = 691550650560.

The previous prime is 694843749079. The next prime is 694843749157. The reversal of 694843749107 is 701947348496.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694843749107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 694843749107.

It is not an unprimeable number, because it can be changed into a prime (694843749157) 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, 1646548958 + ... + 1646549379.

It is an arithmetic number, because the mean of its divisors is an integer number (174534211914).

Almost surely, 2^694843749107 is an apocalyptic number.

694843749107 is a deficient number, since it is larger than the sum of its proper divisors (3293098549).

694843749107 is a wasteful number, since it uses less digits than its factorization.

694843749107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293098548.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 694843749107 in words is "six hundred ninety-four billion, eight hundred forty-three million, seven hundred forty-nine thousand, one hundred seven".