106563815 has 4 divisors (see below), whose sum is σ = 127876584. Its totient is φ = 85251048.

The previous prime is 106563791. The next prime is 106563823. The reversal of 106563815 is 518365601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106563815 - 2⁸ = 106563559 is a prime.

It is a super-2 number, since 2×106563815² = 22711693334708450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10656377 + ... + 10656386.

It is an arithmetic number, because the mean of its divisors is an integer number (31969146).

Almost surely, 2^106563815 is an apocalyptic number.

106563815 is a deficient number, since it is larger than the sum of its proper divisors (21312769).

106563815 is an equidigital number, since it uses as much as digits as its factorization.

106563815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312768.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 106563815 is about 10322.9751041064. The cubic root of 106563815 is about 474.0999614111.

The spelling of 106563815 in words is "one hundred six million, five hundred sixty-three thousand, eight hundred fifteen".