105685618 has 8 divisors (see below), whose sum is σ = 162395100. Its totient is φ = 51553920.

The previous prime is 105685609. The next prime is 105685639. The reversal of 105685618 is 816586501.

It can be written as a sum of positive squares in 2 ways, for example, as 99940009 + 5745609 = 9997^2 + 2397^2 .

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

It is a super-2 number, since 2×105685618² = 22338899704083848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644343 + ... + 644506.

Almost surely, 2^105685618 is an apocalyptic number.

105685618 is a deficient number, since it is larger than the sum of its proper divisors (56709482).

105685618 is a wasteful number, since it uses less digits than its factorization.

105685618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288892.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 105685618 is about 10280.3510640445. The cubic root of 105685618 is about 472.7940079243.

The spelling of 105685618 in words is "one hundred five million, six hundred eighty-five thousand, six hundred eighteen".