699097337856 has 156 divisors (see below), whose sum is σ = 2052478991940. Its totient is φ = 229211504640.

The previous prime is 699097337843. The next prime is 699097337857. The reversal of 699097337856 is 658733790996.

It can be written as a sum of positive squares in 2 ways, for example, as 71224934400 + 627872403456 = 266880^2 + 792384^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699097337857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2093260 + ... + 2404148.

It is an arithmetic number, because the mean of its divisors is an integer number (13156916615).

Almost surely, 2^699097337856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699097337856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026239495970).

699097337856 is an abundant number, since it is smaller than the sum of its proper divisors (1353381654084).

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

699097337856 is a wasteful number, since it uses less digits than its factorization.

699097337856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310980 (or 310955 counting only the distinct ones).

The product of its (nonzero) digits is 462944160, while the sum is 72.

The spelling of 699097337856 in words is "six hundred ninety-nine billion, ninety-seven million, three hundred thirty-seven thousand, eight hundred fifty-six".