699743083680 has 144 divisors (see below), whose sum is σ = 2446114290984. Its totient is φ = 182046965760.

The previous prime is 699743083661. The next prime is 699743083681. The reversal of 699743083680 is 86380347996.

699743083680 is a `hidden beast` number, since 6 + 9 + 97 + 430 + 8 + 36 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 256842185616 + 442900898064 = 506796^2 + 665508^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (699743083681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5866969 + ... + 5985048.

Almost surely, 2^699743083680 is an apocalyptic number.

699743083680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

699743083680 is an abundant number, since it is smaller than the sum of its proper divisors (1746371207304).

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

699743083680 is a wasteful number, since it uses less digits than its factorization.

699743083680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852079 (or 11852068 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 699743083680 in words is "six hundred ninety-nine billion, seven hundred forty-three million, eighty-three thousand, six hundred eighty".