693881387620 has 12 divisors (see below), whose sum is σ = 1457150914044. Its totient is φ = 277552555040.

The previous prime is 693881387611. The next prime is 693881387653. The reversal of 693881387620 is 26783188396.

It can be written as a sum of positive squares in 2 ways, for example, as 341871751204 + 352009636416 = 584698^2 + 593304^2 .

It is an unprimeable number.

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, 17347034671 + ... + 17347034710.

It is an arithmetic number, because the mean of its divisors is an integer number (121429242837).

Almost surely, 2^693881387620 is an apocalyptic number.

It is an amenable number.

693881387620 is an abundant number, since it is smaller than the sum of its proper divisors (763269526424).

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

693881387620 is a wasteful number, since it uses less digits than its factorization.

693881387620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34694069390 (or 34694069388 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 693881387620 in words is "six hundred ninety-three billion, eight hundred eighty-one million, three hundred eighty-seven thousand, six hundred twenty".