694624961812 has 6 divisors (see below), whose sum is σ = 1215593683178. Its totient is φ = 347312480904.

The previous prime is 694624961801. The next prime is 694624961813. The reversal of 694624961812 is 218169426496.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 644253443716 + 50371518096 = 802654^2 + 224436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694624961813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86828120223 + ... + 86828120230.

Almost surely, 2^694624961812 is an apocalyptic number.

It is an amenable number.

694624961812 is a deficient number, since it is larger than the sum of its proper divisors (520968721366).

694624961812 is a wasteful number, since it uses less digits than its factorization.

694624961812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173656240457 (or 173656240455 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 58.

The spelling of 694624961812 in words is "six hundred ninety-four billion, six hundred twenty-four million, nine hundred sixty-one thousand, eight hundred twelve".