10680021 has 24 divisors (see below), whose sum is σ = 16937856. Its totient is φ = 6431040.

The previous prime is 10680011. The next prime is 10680023. The reversal of 10680021 is 12008601.

It is not a de Polignac number, because 10680021 - 2⁵ = 10679989 is a prime.

It is a super-2 number, since 2×10680021² = 228125697120882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10679976 and 10680003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10680023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22836 + ... + 23298.

It is an arithmetic number, because the mean of its divisors is an integer number (705744).

Almost surely, 2^10680021 is an apocalyptic number.

10680021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10680021 is a deficient number, since it is larger than the sum of its proper divisors (6257835).

10680021 is a wasteful number, since it uses less digits than its factorization.

10680021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 10680021 is about 3268.0301406199. The cubic root of 10680021 is about 220.2203096097.

Adding to 10680021 its reverse (12008601), we get a palindrome (22688622).

The spelling of 10680021 in words is "ten million, six hundred eighty thousand, twenty-one".