10491863 has 4 divisors (see below), whose sum is σ = 10498488. Its totient is φ = 10485240.

The previous prime is 10491853. The next prime is 10491869. The reversal of 10491863 is 36819401.

It is a happy number.

10491863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10491863 - 2⁴ = 10491847 is a prime.

It is a super-2 number, since 2×10491863² = 220158378421538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10491869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (2624622).

Almost surely, 2^10491863 is an apocalyptic number.

10491863 is a deficient number, since it is larger than the sum of its proper divisors (6625).

10491863 is an equidigital number, since it uses as much as digits as its factorization.

10491863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6624.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 10491863 is about 3239.1145395000. The cubic root of 10491863 is about 218.9193770632.

The spelling of 10491863 in words is "ten million, four hundred ninety-one thousand, eight hundred sixty-three".