106639992 has 48 divisors (see below), whose sum is σ = 294971040. Its totient is φ = 34789248.

The previous prime is 106639991. The next prime is 106640059. The reversal of 106639992 is 299936601.

It is a happy number.

106639992 is a `hidden beast` number, since 1 + 0 + 6 + 639 + 9 + 9 + 2 = 666.

It is a super-2 number, since 2×106639992² = 22744175787520128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106639991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12373 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (6145230).

Almost surely, 2^106639992 is an apocalyptic number.

106639992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

106639992 is an abundant number, since it is smaller than the sum of its proper divisors (188331048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106639992 is a wasteful number, since it uses less digits than its factorization.

106639992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31572 (or 31565 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 106639992 is about 10326.6641273937. The cubic root of 106639992 is about 474.2129044098.

The spelling of 106639992 in words is "one hundred six million, six hundred thirty-nine thousand, nine hundred ninety-two".