10720513 has 4 divisors (see below), whose sum is σ = 11066368. Its totient is φ = 10374660.

The previous prime is 10720511. The next prime is 10720519. The reversal of 10720513 is 31502701.

10720513 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10720513 - 2¹ = 10720511 is a prime.

It is a super-2 number, since 2×10720513² = 229858797966338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10720511) 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, 172881 + ... + 172942.

It is an arithmetic number, because the mean of its divisors is an integer number (2766592).

Almost surely, 2^10720513 is an apocalyptic number.

It is an amenable number.

10720513 is a deficient number, since it is larger than the sum of its proper divisors (345855).

10720513 is an equidigital number, since it uses as much as digits as its factorization.

10720513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345854.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 10720513 is about 3274.2194489680. The cubic root of 10720513 is about 220.4982714543.

The spelling of 10720513 in words is "ten million, seven hundred twenty thousand, five hundred thirteen".