10654021 has 6 divisors (see below), whose sum is σ = 12393510. Its totient is φ = 9131976.

The previous prime is 10654013. The next prime is 10654027. The reversal of 10654021 is 12045601.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 509796 = 3185^2 + 714^2 .

It is not a de Polignac number, because 10654021 - 2³ = 10654013 is a prime.

It is a super-2 number, since 2×10654021² = 227016326936882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10654021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10654027) 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, 108666 + ... + 108763.

It is an arithmetic number, because the mean of its divisors is an integer number (2065585).

Almost surely, 2^10654021 is an apocalyptic number.

10654021 is the 1885-th hex number.

It is an amenable number.

10654021 is a deficient number, since it is larger than the sum of its proper divisors (1739489).

10654021 is an equidigital number, since it uses as much as digits as its factorization.

10654021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217443 (or 217436 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 10654021 is about 3264.0497851595. The cubic root of 10654021 is about 220.0414591287.

Adding to 10654021 its reverse (12045601), we get a palindrome (22699622).

The spelling of 10654021 in words is "ten million, six hundred fifty-four thousand, twenty-one".