10421663 has 12 divisors (see below), whose sum is σ = 12837312. Its totient is φ = 8406720.

The previous prime is 10421623. The next prime is 10421669. The reversal of 10421663 is 36612401.

It is a happy number.

It is not a de Polignac number, because 10421663 - 2¹⁴ = 10405279 is a prime.

It is a super-2 number, since 2×10421663² = 217222119371138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421669) 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, 5423 + ... + 7088.

It is an arithmetic number, because the mean of its divisors is an integer number (1069776).

Almost surely, 2^10421663 is an apocalyptic number.

10421663 is a deficient number, since it is larger than the sum of its proper divisors (2415649).

10421663 is a wasteful number, since it uses less digits than its factorization.

10421663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12542 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 10421663 is about 3228.2600576781. The cubic root of 10421663 is about 218.4300281964.

The spelling of 10421663 in words is "ten million, four hundred twenty-one thousand, six hundred sixty-three".