106818643 has 2 divisors, whose sum is σ = 106818644. Its totient is φ = 106818642.

The previous prime is 106818641. The next prime is 106818659. The reversal of 106818643 is 346818601.

It is a weak prime.

It is an emirp because it is prime and its reverse (346818601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106818643 - 2¹ = 106818641 is a prime.

It is a super-2 number, since 2×106818643² = 22820444984722898, which contains 22 as substring.

Together with 106818641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (106818641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53409321 + 53409322.

It is an arithmetic number, because the mean of its divisors is an integer number (53409322).

Almost surely, 2^106818643 is an apocalyptic number.

106818643 is a deficient number, since it is larger than the sum of its proper divisors (1).

106818643 is an equidigital number, since it uses as much as digits as its factorization.

106818643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 106818643 is about 10335.3104936427. The cubic root of 106818643 is about 474.4775685477.

The spelling of 106818643 in words is "one hundred six million, eight hundred eighteen thousand, six hundred forty-three".