10653981 has 16 divisors (see below), whose sum is σ = 15656256. Its totient is φ = 6402816.

The previous prime is 10653977. The next prime is 10653989. The reversal of 10653981 is 18935601.

10653981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10653981 - 2² = 10653977 is a prime.

It is a super-2 number, since 2×10653981² = 227014622296722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10653989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1500 + ... + 4853.

It is an arithmetic number, because the mean of its divisors is an integer number (978516).

Almost surely, 2^10653981 is an apocalyptic number.

It is an amenable number.

10653981 is a deficient number, since it is larger than the sum of its proper divisors (5002275).

10653981 is a wasteful number, since it uses less digits than its factorization.

10653981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6412.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 10653981 is about 3264.0436577963. The cubic root of 10653981 is about 220.0411837500.

The spelling of 10653981 in words is "ten million, six hundred fifty-three thousand, nine hundred eighty-one".