694998349779 has 4 divisors (see below), whose sum is σ = 926664466376. Its totient is φ = 463332233184.

The previous prime is 694998349769. The next prime is 694998349789. The reversal of 694998349779 is 977943899496.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (694998349769) and next prime (694998349789).

It is not a de Polignac number, because 694998349779 - 2⁴ = 694998349763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694998349769) 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 in 3 ways as a sum of consecutive naturals, for example, 115833058294 + ... + 115833058299.

It is an arithmetic number, because the mean of its divisors is an integer number (231666116594).

Almost surely, 2^694998349779 is an apocalyptic number.

694998349779 is a deficient number, since it is larger than the sum of its proper divisors (231666116597).

694998349779 is a wasteful number, since it uses less digits than its factorization.

694998349779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231666116596.

The product of its digits is 6666395904, while the sum is 84.

The spelling of 694998349779 in words is "six hundred ninety-four billion, nine hundred ninety-eight million, three hundred forty-nine thousand, seven hundred seventy-nine".