106815643 has 4 divisors (see below), whose sum is σ = 116526168. Its totient is φ = 97105120.

The previous prime is 106815601. The next prime is 106815659. The reversal of 106815643 is 346518601.

It is a happy number.

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 106815643 - 2¹³ = 106807451 is a prime.

It is a super-2 number, since 2×106815643² = 22819163179006898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106815599 and 106815608.

It is not an unprimeable number, because it can be changed into a prime (106815673) 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, 4855246 + ... + 4855267.

It is an arithmetic number, because the mean of its divisors is an integer number (29131542).

Almost surely, 2^106815643 is an apocalyptic number.

106815643 is a deficient number, since it is larger than the sum of its proper divisors (9710525).

106815643 is an equidigital number, since it uses as much as digits as its factorization.

106815643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710524.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 106815643 is about 10335.1653591029. The cubic root of 106815643 is about 474.4731266077.

The spelling of 106815643 in words is "one hundred six million, eight hundred fifteen thousand, six hundred forty-three".