699859680 has 192 divisors, whose sum is σ = 2499517440. Its totient is φ = 163178496.

The previous prime is 699859669. The next prime is 699859681. The reversal of 699859680 is 86958996.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699859681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115609 + ... + 121511.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^699859680 is an apocalyptic number.

699859680 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 699859680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249758720).

699859680 is an abundant number, since it is smaller than the sum of its proper divisors (1799657760).

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

699859680 is a wasteful number, since it uses less digits than its factorization.

699859680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953 (or 5945 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 60.

The square root of 699859680 is about 26454.8611789970. The cubic root of 699859680 is about 887.8446688781.

The spelling of 699859680 in words is "six hundred ninety-nine million, eight hundred fifty-nine thousand, six hundred eighty".