699444720 has 600 divisors, whose sum is σ = 2881128096. Its totient is φ = 156017664.

The previous prime is 699444703. The next prime is 699444761. The reversal of 699444720 is 27444996.

699444720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 30410629 + ... + 30410651.

Almost surely, 2^699444720 is an apocalyptic number.

699444720 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 699444720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440564048).

699444720 is an abundant number, since it is smaller than the sum of its proper divisors (2181683376).

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

699444720 is a wasteful number, since it uses less digits than its factorization.

699444720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 699444720 is about 26447.0172231199. The cubic root of 699444720 is about 887.6691609047.

The spelling of 699444720 in words is "six hundred ninety-nine million, four hundred forty-four thousand, seven hundred twenty".