106888891 has 2 divisors, whose sum is σ = 106888892. Its totient is φ = 106888890.

The previous prime is 106888883. The next prime is 106888921. The reversal of 106888891 is 198888601.

It is a weak prime.

It is an emirp because it is prime and its reverse (198888601) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 168888901 and 109888861.

It is a cyclic number.

It is not a de Polignac number, because 106888891 - 2³ = 106888883 is a prime.

It is a super-2 number, since 2×106888891² = 22850470038419762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106888801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53444445 + 53444446.

It is an arithmetic number, because the mean of its divisors is an integer number (53444446).

Almost surely, 2^106888891 is an apocalyptic number.

106888891 is a deficient number, since it is larger than the sum of its proper divisors (1).

106888891 is an equidigital number, since it uses as much as digits as its factorization.

106888891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 49.

The square root of 106888891 is about 10338.7083816113. The cubic root of 106888891 is about 474.5815572504.

The spelling of 106888891 in words is "one hundred six million, eight hundred eighty-eight thousand, eight hundred ninety-one".