8720153 has 4 divisors (see below), whose sum is σ = 9390948. Its totient is φ = 8049360.

The previous prime is 8720137. The next prime is 8720161. The reversal of 8720153 is 3510278.

8720153 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 7011904 = 1307^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 8720153 - 2⁴ = 8720137 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335378 + ... + 335403.

It is an arithmetic number, because the mean of its divisors is an integer number (2347737).

Almost surely, 2^8720153 is an apocalyptic number.

It is an amenable number.

8720153 is a deficient number, since it is larger than the sum of its proper divisors (670795).

8720153 is a wasteful number, since it uses less digits than its factorization.

8720153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670794.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 8720153 is about 2952.9905181019. The cubic root of 8720153 is about 205.8296971207.

The spelling of 8720153 in words is "eight million, seven hundred twenty thousand, one hundred fifty-three".