106640140 has 24 divisors (see below), whose sum is σ = 227742480. Its totient is φ = 41932608.

The previous prime is 106640119. The next prime is 106640147. The reversal of 106640140 is 41046601.

It is a super-2 number, since 2×106640140² = 22744238918439200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106640147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44007 + ... + 46366.

It is an arithmetic number, because the mean of its divisors is an integer number (9489270).

Almost surely, 2^106640140 is an apocalyptic number.

106640140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

106640140 is an abundant number, since it is smaller than the sum of its proper divisors (121102340).

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

106640140 is a wasteful number, since it uses less digits than its factorization.

106640140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90441 (or 90439 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 106640140 is about 10326.6712933065. The cubic root of 106640140 is about 474.2131237880.

Adding to 106640140 its reverse (41046601), we get a palindrome (147686741).

The spelling of 106640140 in words is "one hundred six million, six hundred forty thousand, one hundred forty".