106894991 has 4 divisors (see below), whose sum is σ = 122165712. Its totient is φ = 91624272.

The previous prime is 106894987. The next prime is 106894993. The reversal of 106894991 is 199498601.

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 106894991 - 2² = 106894987 is a prime.

It is a super-2 number, since 2×106894991² = 22853078201780162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106894993) 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, 7635350 + ... + 7635363.

It is an arithmetic number, because the mean of its divisors is an integer number (30541428).

Almost surely, 2^106894991 is an apocalyptic number.

106894991 is a deficient number, since it is larger than the sum of its proper divisors (15270721).

106894991 is an equidigital number, since it uses as much as digits as its factorization.

106894991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270720.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 106894991 is about 10339.0033852398. The cubic root of 106894991 is about 474.5905849813.

The spelling of 106894991 in words is "one hundred six million, eight hundred ninety-four thousand, nine hundred ninety-one".