8720541 has 24 divisors (see below), whose sum is σ = 13837824. Its totient is φ = 5469120.

The previous prime is 8720533. The next prime is 8720557. The reversal of 8720541 is 1450278.

It is not a de Polignac number, because 8720541 - 2³ = 8720533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3076 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (576576).

Almost surely, 2^8720541 is an apocalyptic number.

8720541 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8720541 is a deficient number, since it is larger than the sum of its proper divisors (5117283).

8720541 is a wasteful number, since it uses less digits than its factorization.

8720541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 8720541 is about 2953.0562134846. The cubic root of 8720541 is about 205.8327498476.

It can be divided in two parts, 8720 and 541, that added together give a cube (9261 = 21³).

The spelling of 8720541 in words is "eight million, seven hundred twenty thousand, five hundred forty-one".