106781785 has 16 divisors (see below), whose sum is σ = 140212800. Its totient is φ = 77423040.

The previous prime is 106781783. The next prime is 106781809. The reversal of 106781785 is 587187601.

It is not a de Polignac number, because 106781785 - 2¹ = 106781783 is a prime.

It is a super-2 number, since 2×106781785² = 22804699215572450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106781783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16414 + ... + 21976.

It is an arithmetic number, because the mean of its divisors is an integer number (8763300).

Almost surely, 2^106781785 is an apocalyptic number.

It is an amenable number.

106781785 is a deficient number, since it is larger than the sum of its proper divisors (33431015).

106781785 is a wasteful number, since it uses less digits than its factorization.

106781785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928.

The product of its (nonzero) digits is 94080, while the sum is 43.

The square root of 106781785 is about 10333.5272293637. The cubic root of 106781785 is about 474.4229891049.

The spelling of 106781785 in words is "one hundred six million, seven hundred eighty-one thousand, seven hundred eighty-five".