10861905 has 16 divisors (see below), whose sum is σ = 17849664. Its totient is φ = 5636160.

The previous prime is 10861897. The next prime is 10861909. The reversal of 10861905 is 50916801.

It is a happy number.

It is not a de Polignac number, because 10861905 - 2³ = 10861897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10861909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9231 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (1115604).

Almost surely, 2^10861905 is an apocalyptic number.

10861905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10861905 is a deficient number, since it is larger than the sum of its proper divisors (6987759).

10861905 is a wasteful number, since it uses less digits than its factorization.

10861905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19616.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 10861905 is about 3295.7404327404. The cubic root of 10861905 is about 221.4634188256.

The spelling of 10861905 in words is "ten million, eight hundred sixty-one thousand, nine hundred five".