106891906 has 16 divisors (see below), whose sum is σ = 180557568. Its totient is φ = 47019600.

The previous prime is 106891871. The next prime is 106891907. The reversal of 106891906 is 609198601.

It is a super-2 number, since 2×106891906² = 22851759136625672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106891907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77685 + ... + 79048.

It is an arithmetic number, because the mean of its divisors is an integer number (11284848).

Almost surely, 2^106891906 is an apocalyptic number.

106891906 is a deficient number, since it is larger than the sum of its proper divisors (73665662).

106891906 is a wasteful number, since it uses less digits than its factorization.

106891906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156777.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 106891906 is about 10338.8541918338. The cubic root of 106891906 is about 474.5860193603.

The spelling of 106891906 in words is "one hundred six million, eight hundred ninety-one thousand, nine hundred six".