106657638 has 16 divisors (see below), whose sum is σ = 213645936. Its totient is φ = 35497440.

The previous prime is 106657631. The next prime is 106657657. The reversal of 106657638 is 836756601.

It is a super-2 number, since 2×106657638² = 22751703487478088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106657638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106657631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9481 + ... + 17412.

It is an arithmetic number, because the mean of its divisors is an integer number (13352871).

Almost surely, 2^106657638 is an apocalyptic number.

106657638 is an abundant number, since it is smaller than the sum of its proper divisors (106988298).

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

106657638 is a wasteful number, since it uses less digits than its factorization.

106657638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27559.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 106657638 is about 10327.5184821912. The cubic root of 106657638 is about 474.2390593861.

The spelling of 106657638 in words is "one hundred six million, six hundred fifty-seven thousand, six hundred thirty-eight".