10653921 has 6 divisors (see below), whose sum is σ = 15389010. Its totient is φ = 7102608.

The previous prime is 10653869. The next prime is 10653943. The reversal of 10653921 is 12935601.

10653921 is a `hidden beast` number, since 1 + 0 + 653 + 9 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 225 = 3264^2 + 15^2 .

It is not a de Polignac number, because 10653921 - 2⁶ = 10653857 is a prime.

It is a super-2 number, since 2×10653921² = 227012065348482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10653971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591876 + ... + 591893.

It is an arithmetic number, because the mean of its divisors is an integer number (2564835).

Almost surely, 2^10653921 is an apocalyptic number.

It is an amenable number.

10653921 is a deficient number, since it is larger than the sum of its proper divisors (4735089).

10653921 is a wasteful number, since it uses less digits than its factorization.

10653921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183775 (or 1183772 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 10653921 is about 3264.0344667298. The cubic root of 10653921 is about 220.0407706808.

The spelling of 10653921 in words is "ten million, six hundred fifty-three thousand, nine hundred twenty-one".