10505986 has 16 divisors (see below), whose sum is σ = 16516224. Its totient is φ = 5002624.

The previous prime is 10505981. The next prime is 10505987. The reversal of 10505986 is 68950501.

It is a super-2 number, since 2×10505986² = 220751483664392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10505981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15915 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (1032264).

Almost surely, 2^10505986 is an apocalyptic number.

10505986 is a deficient number, since it is larger than the sum of its proper divisors (6010238).

10505986 is a wasteful number, since it uses less digits than its factorization.

10505986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 10505986 is about 3241.2938774508. The cubic root of 10505986 is about 219.0175614727.

The spelling of 10505986 in words is "ten million, five hundred five thousand, nine hundred eighty-six".