13660490 has 16 divisors (see below), whose sum is σ = 24927048. Its totient is φ = 5389056.

The previous prime is 13660489. The next prime is 13660499. The reversal of 13660490 is 9406631.

It can be written as a sum of positive squares in 4 ways, for example, as 12666481 + 994009 = 3559^2 + 997^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13660499) 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, 8627 + ... + 10086.

Almost surely, 2^13660490 is an apocalyptic number.

13660490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13660490 is a deficient number, since it is larger than the sum of its proper divisors (11266558).

13660490 is a wasteful number, since it uses less digits than its factorization.

13660490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18793.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 13660490 is about 3696.0100108090. The cubic root of 13660490 is about 239.0500061678.

The spelling of 13660490 in words is "thirteen million, six hundred sixty thousand, four hundred ninety".