10597721 has 8 divisors (see below), whose sum is σ = 11063304. Its totient is φ = 10142080.

The previous prime is 10597711. The next prime is 10597729. The reversal of 10597721 is 12779501.

10597721 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 126025 + 10471696 = 355^2 + 3236^2 .

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

It is not a de Polignac number, because 10597721 - 2²² = 6403417 is a prime.

It is a super-2 number, since 2×10597721² = 224623380787682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10597729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266 + ... + 4611.

It is an arithmetic number, because the mean of its divisors is an integer number (1382913).

Almost surely, 2^10597721 is an apocalyptic number.

It is an amenable number.

10597721 is a deficient number, since it is larger than the sum of its proper divisors (465583).

10597721 is an equidigital number, since it uses as much as digits as its factorization.

10597721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 10597721 is about 3255.4141057629. The cubic root of 10597721 is about 219.6531794349.

The spelling of 10597721 in words is "ten million, five hundred ninety-seven thousand, seven hundred twenty-one".