10870721 has 4 divisors (see below), whose sum is σ = 10878000. Its totient is φ = 10863444.

The previous prime is 10870703. The next prime is 10870729. The reversal of 10870721 is 12707801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10870721 - 2¹⁰ = 10869697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10870729) 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, 491 + ... + 4688.

It is an arithmetic number, because the mean of its divisors is an integer number (2719500).

Almost surely, 2^10870721 is an apocalyptic number.

It is an amenable number.

10870721 is a deficient number, since it is larger than the sum of its proper divisors (7279).

10870721 is an equidigital number, since it uses as much as digits as its factorization.

10870721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 10870721 is about 3297.0776454309. The cubic root of 10870721 is about 221.5233191075.

The spelling of 10870721 in words is "ten million, eight hundred seventy thousand, seven hundred twenty-one".