10662021 has 12 divisors (see below), whose sum is σ = 16211520. Its totient is φ = 6733800.

The previous prime is 10662019. The next prime is 10662049. The reversal of 10662021 is 12026601.

It is a happy number.

10662021 is a `hidden beast` number, since 1 + 0 + 662 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 10662021 - 2¹ = 10662019 is a prime.

It is a super-2 number, since 2×10662021² = 227357383608882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10661985 and 10662003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10662521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31005 + ... + 31346.

It is an arithmetic number, because the mean of its divisors is an integer number (1350960).

Almost surely, 2^10662021 is an apocalyptic number.

It is an amenable number.

10662021 is a deficient number, since it is larger than the sum of its proper divisors (5549499).

10662021 is a wasteful number, since it uses less digits than its factorization.

10662021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62376 (or 62373 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10662021 is about 3265.2750267014. The cubic root of 10662021 is about 220.0965210078.

Adding to 10662021 its reverse (12026601), we get a palindrome (22688622).

The spelling of 10662021 in words is "ten million, six hundred sixty-two thousand, twenty-one".