10563891 has 16 divisors (see below), whose sum is σ = 15429120. Its totient is φ = 6389280.

The previous prime is 10563887. The next prime is 10563911. The reversal of 10563891 is 19836501.

It is not a de Polignac number, because 10563891 - 2² = 10563887 is a prime.

It is a super-2 number, since 2×10563891² = 223191586119762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10563811) 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, 6 + ... + 4596.

It is an arithmetic number, because the mean of its divisors is an integer number (964320).

Almost surely, 2^10563891 is an apocalyptic number.

10563891 is a deficient number, since it is larger than the sum of its proper divisors (4865229).

10563891 is a wasteful number, since it uses less digits than its factorization.

10563891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666.

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

The square root of 10563891 is about 3250.2139929549. The cubic root of 10563891 is about 219.4192049782.

The spelling of 10563891 in words is "ten million, five hundred sixty-three thousand, eight hundred ninety-one".