699120720 has 120 divisors (see below), whose sum is σ = 2434906656. Its totient is φ = 186427008.

The previous prime is 699120701. The next prime is 699120743. The reversal of 699120720 is 27021996.

699120720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×699120720² = 977539562266636800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1459 + ... + 37421.

Almost surely, 2^699120720 is an apocalyptic number.

699120720 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 699120720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217453328).

699120720 is an abundant number, since it is smaller than the sum of its proper divisors (1735785936).

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

699120720 is a wasteful number, since it uses less digits than its factorization.

699120720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35991 (or 35973 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 699120720 is about 26440.8910591152. The cubic root of 699120720 is about 887.5320763385.

The spelling of 699120720 in words is "six hundred ninety-nine million, one hundred twenty thousand, seven hundred twenty".