699090799680 has 1792 divisors, whose sum is σ = 3220186152960. Its totient is φ = 138740760576.

The previous prime is 699090799679. The next prime is 699090799699. The reversal of 699090799680 is 86997090996.

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

It is a junction number, because it is equal to n+sod(n) for n = 699090799599 and 699090799608.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1211595552 + ... + 1211596128.

It is an arithmetic number, because the mean of its divisors is an integer number (1796978880).

Almost surely, 2^699090799680 is an apocalyptic number.

699090799680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699090799680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610093076480).

699090799680 is an abundant number, since it is smaller than the sum of its proper divisors (2521095353280).

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

699090799680 is a wasteful number, since it uses less digits than its factorization.

699090799680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 119042784, while the sum is 72.

The spelling of 699090799680 in words is "six hundred ninety-nine billion, ninety million, seven hundred ninety-nine thousand, six hundred eighty".