106644681 has 96 divisors (see below), whose sum is σ = 195435520. Its totient is φ = 57736800.

The previous prime is 106644677. The next prime is 106644691. The reversal of 106644681 is 186446601.

106644681 is a `hidden beast` number, since 1 + 0 + 6 + 644 + 6 + 8 + 1 = 666.

It is not a de Polignac number, because 106644681 - 2² = 106644677 is a prime.

It is a super-2 number, since 2×106644681² = 22746175971183522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106644631) 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 95 ways as a sum of consecutive naturals, for example, 3440136 + ... + 3440166.

Almost surely, 2^106644681 is an apocalyptic number.

106644681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

106644681 is a deficient number, since it is larger than the sum of its proper divisors (88790839).

106644681 is an equidigital number, since it uses as much as digits as its factorization.

106644681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 106644681 is about 10326.8911585239. The cubic root of 106644681 is about 474.2198547470.

The spelling of 106644681 in words is "one hundred six million, six hundred forty-four thousand, six hundred eighty-one".