106681687 has 8 divisors (see below), whose sum is σ = 121987872. Its totient is φ = 91392000.

The previous prime is 106681669. The next prime is 106681697. The reversal of 106681687 is 786186601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 106681687 - 2⁷ = 106681559 is a prime.

It is a super-2 number, since 2×106681687² = 22761964682331938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106681697) 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, 16887 + ... + 22327.

It is an arithmetic number, because the mean of its divisors is an integer number (15248484).

Almost surely, 2^106681687 is an apocalyptic number.

106681687 is a deficient number, since it is larger than the sum of its proper divisors (15306185).

106681687 is an equidigital number, since it uses as much as digits as its factorization.

106681687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8249.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 106681687 is about 10328.6827330497. The cubic root of 106681687 is about 474.2747002718.

The spelling of 106681687 in words is "one hundred six million, six hundred eighty-one thousand, six hundred eighty-seven".