10640863 has 4 divisors (see below), whose sum is σ = 10841688. Its totient is φ = 10440040.

The previous prime is 10640857. The next prime is 10640887. The reversal of 10640863 is 36804601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36804601 = 1069 ⋅34429.

It is a cyclic number.

It is not a de Polignac number, because 10640863 - 2⁵ = 10640831 is a prime.

It is a super-2 number, since 2×10640863² = 226455930769538, 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 (10640263) 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, 100333 + ... + 100438.

It is an arithmetic number, because the mean of its divisors is an integer number (2710422).

Almost surely, 2^10640863 is an apocalyptic number.

10640863 is a deficient number, since it is larger than the sum of its proper divisors (200825).

10640863 is an equidigital number, since it uses as much as digits as its factorization.

10640863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200824.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 10640863 is about 3262.0335681902. The cubic root of 10640863 is about 219.9508361215.

The spelling of 10640863 in words is "ten million, six hundred forty thousand, eight hundred sixty-three".