10668539 has 4 divisors (see below), whose sum is σ = 12192624. Its totient is φ = 9144456.

The previous prime is 10668533. The next prime is 10668563. The reversal of 10668539 is 93586601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93586601 = 157 ⋅596093.

It is a cyclic number.

It is not a de Polignac number, because 10668539 - 2¹⁶ = 10603003 is a prime.

It is a super-2 number, since 2×10668539² = 227635448789042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10668533) 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, 762032 + ... + 762045.

It is an arithmetic number, because the mean of its divisors is an integer number (3048156).

Almost surely, 2^10668539 is an apocalyptic number.

10668539 is a deficient number, since it is larger than the sum of its proper divisors (1524085).

10668539 is an equidigital number, since it uses as much as digits as its factorization.

10668539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524084.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 10668539 is about 3266.2729524643. The cubic root of 10668539 is about 220.1413623154.

The spelling of 10668539 in words is "ten million, six hundred sixty-eight thousand, five hundred thirty-nine".