13480665 has 16 divisors (see below), whose sum is σ = 23530176. Its totient is φ = 6536000.

The previous prime is 13480657. The next prime is 13480667. The reversal of 13480665 is 56608431.

It is not a de Polignac number, because 13480665 - 2³ = 13480657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13480667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40686 + ... + 41015.

It is an arithmetic number, because the mean of its divisors is an integer number (1470636).

Almost surely, 2^13480665 is an apocalyptic number.

13480665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13480665 is a deficient number, since it is larger than the sum of its proper divisors (10049511).

13480665 is a wasteful number, since it uses less digits than its factorization.

13480665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81720.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 13480665 is about 3671.6025111659. The cubic root of 13480665 is about 237.9964279293.

The spelling of 13480665 in words is "thirteen million, four hundred eighty thousand, six hundred sixty-five".