899720 has 32 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 354240.

The previous prime is 899719. The next prime is 899749. The reversal of 899720 is 27998.

899720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3185 + ... + 3455.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2⁸⁹⁹⁷²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028160).

899720 is an abundant number, since it is smaller than the sum of its proper divisors (1156600).

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

899720 is a wasteful number, since it uses less digits than its factorization.

899720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 899720 is about 948.5357136134. The cubic root of 899720 is about 96.5389249395.

The spelling of 899720 in words is "eight hundred ninety-nine thousand, seven hundred twenty".