694779272028 has 72 divisors (see below), whose sum is σ = 1895799578400. Its totient is φ = 213885065856.

The previous prime is 694779272021. The next prime is 694779272039. The reversal of 694779272028 is 820272977496.

694779272028 is a `hidden beast` number, since 6 + 9 + 477 + 92 + 72 + 0 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694779272021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14443323 + ... + 14491346.

It is an arithmetic number, because the mean of its divisors is an integer number (26330549700).

Almost surely, 2^694779272028 is an apocalyptic number.

It is an amenable number.

694779272028 is an abundant number, since it is smaller than the sum of its proper divisors (1201020306372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

694779272028 is a wasteful number, since it uses less digits than its factorization.

694779272028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934731 (or 28934726 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 694779272028 in words is "six hundred ninety-four billion, seven hundred seventy-nine million, two hundred seventy-two thousand, twenty-eight".