13664260 has 24 divisors (see below), whose sum is σ = 30383640. Its totient is φ = 5144064.

The previous prime is 13664257. The next prime is 13664279. The reversal of 13664260 is 6246631.

It can be written as a sum of positive squares in 4 ways, for example, as 254016 + 13410244 = 504^2 + 3662^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19755 + ... + 20434.

It is an arithmetic number, because the mean of its divisors is an integer number (1265985).

Almost surely, 2^13664260 is an apocalyptic number.

13664260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13664260 is an abundant number, since it is smaller than the sum of its proper divisors (16719380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13664260 is a wasteful number, since it uses less digits than its factorization.

13664260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40215 (or 40213 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 13664260 is about 3696.5199850670. The cubic root of 13664260 is about 239.0719950235.

It can be divided in two parts, 13664 and 260, that added together give a square (13924 = 118²).

The spelling of 13664260 in words is "thirteen million, six hundred sixty-four thousand, two hundred sixty".