105687812 has 6 divisors (see below), whose sum is σ = 184953678. Its totient is φ = 52843904.

The previous prime is 105687809. The next prime is 105687833. The reversal of 105687812 is 218786501.

It can be written as a sum of positive squares in only one way, i.e., 66324736 + 39363076 = 8144^2 + 6274^2 .

It is a super-2 number, since 2×105687812² = 22339827210694688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13210973 + ... + 13210980.

It is an arithmetic number, because the mean of its divisors is an integer number (30825613).

Almost surely, 2^105687812 is an apocalyptic number.

It is an amenable number.

105687812 is a deficient number, since it is larger than the sum of its proper divisors (79265866).

105687812 is a wasteful number, since it uses less digits than its factorization.

105687812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26421957 (or 26421955 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 105687812 is about 10280.4577719088. The cubic root of 105687812 is about 472.7972795863.

The spelling of 105687812 in words is "one hundred five million, six hundred eighty-seven thousand, eight hundred twelve".