8721741 has 16 divisors (see below), whose sum is σ = 13990400. Its totient is φ = 4721328.

The previous prime is 8721737. The next prime is 8721749. The reversal of 8721741 is 1471278.

It is not a de Polignac number, because 8721741 - 2² = 8721737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8721699 and 8721708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8721749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10531 + ... + 11328.

It is an arithmetic number, because the mean of its divisors is an integer number (874400).

Almost surely, 2^8721741 is an apocalyptic number.

It is an amenable number.

8721741 is a deficient number, since it is larger than the sum of its proper divisors (5268659).

8721741 is a wasteful number, since it uses less digits than its factorization.

8721741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21888.

The product of its digits is 3136, while the sum is 30.

The square root of 8721741 is about 2953.2593858312. The cubic root of 8721741 is about 205.8421906981.

The spelling of 8721741 in words is "eight million, seven hundred twenty-one thousand, seven hundred forty-one".