105781685 has 8 divisors (see below), whose sum is σ = 127540896. Its totient is φ = 84223440.

The previous prime is 105781679. The next prime is 105781699. The reversal of 105781685 is 586187501.

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

It is not a de Polignac number, because 105781685 - 2¹⁴ = 105765301 is a prime.

It is a super-2 number, since 2×105781685² = 22379529762878450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49079 + ... + 51188.

It is an arithmetic number, because the mean of its divisors is an integer number (15942612).

Almost surely, 2^105781685 is an apocalyptic number.

It is an amenable number.

105781685 is a deficient number, since it is larger than the sum of its proper divisors (21759211).

105781685 is a wasteful number, since it uses less digits than its factorization.

105781685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100483.

The product of its (nonzero) digits is 67200, while the sum is 41.

The square root of 105781685 is about 10285.0223626398. The cubic root of 105781685 is about 472.9372192956.

The spelling of 105781685 in words is "one hundred five million, seven hundred eighty-one thousand, six hundred eighty-five".