12853665 has 48 divisors (see below), whose sum is σ = 25384320. Its totient is φ = 5955840.

The previous prime is 12853657. The next prime is 12853693. The reversal of 12853665 is 56635821.

It is not a de Polignac number, because 12853665 - 2³ = 12853657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10821 + ... + 11949.

It is an arithmetic number, because the mean of its divisors is an integer number (528840).

Almost surely, 2^12853665 is an apocalyptic number.

12853665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12853665 is a deficient number, since it is larger than the sum of its proper divisors (12530655).

12853665 is a wasteful number, since it uses less digits than its factorization.

12853665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 1171 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 12853665 is about 3585.2008311948. The cubic root of 12853665 is about 234.2478745260.

It can be divided in two parts, 1285 and 3665, that added together give a triangular number (4950 = T₉₉).

The spelling of 12853665 in words is "twelve million, eight hundred fifty-three thousand, six hundred sixty-five".