8721410 has 8 divisors (see below), whose sum is σ = 15698556. Its totient is φ = 3488560.

The previous prime is 8721403. The next prime is 8721413. The reversal of 8721410 is 141278.

It can be written as a sum of positive squares in 2 ways, for example, as 8508889 + 212521 = 2917^2 + 461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8721413) 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, 436061 + ... + 436080.

Almost surely, 2^8721410 is an apocalyptic number.

8721410 is a deficient number, since it is larger than the sum of its proper divisors (6977146).

8721410 is a wasteful number, since it uses less digits than its factorization.

8721410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872148.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 8721410 is about 2953.2033455216. The cubic root of 8721410 is about 205.8395866834.

Adding to 8721410 its reverse (141278), we get a palindrome (8862688).

The spelling of 8721410 in words is "eight million, seven hundred twenty-one thousand, four hundred ten".