10642563 has 8 divisors (see below), whose sum is σ = 15766800. Its totient is φ = 7095024.

The previous prime is 10642547. The next prime is 10642573. The reversal of 10642563 is 36524601.

10642563 is a `hidden beast` number, since 10 + 642 + 5 + 6 + 3 = 666.

It is not a de Polignac number, because 10642563 - 2⁴ = 10642547 is a prime.

It is a super-2 number, since 2×10642563² = 226528294417938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 394169 = 10642563 / (1 + 0 + 6 + 4 + 2 + 5 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (10642573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197058 + ... + 197111.

It is an arithmetic number, because the mean of its divisors is an integer number (1970850).

Almost surely, 2^10642563 is an apocalyptic number.

10642563 is a deficient number, since it is larger than the sum of its proper divisors (5124237).

10642563 is an equidigital number, since it uses as much as digits as its factorization.

10642563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394178 (or 394172 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 10642563 is about 3262.2941314357. The cubic root of 10642563 is about 219.9625487213.

The spelling of 10642563 in words is "ten million, six hundred forty-two thousand, five hundred sixty-three".