13662616 has 32 divisors (see below), whose sum is σ = 28226880. Its totient is φ = 6148000.

The previous prime is 13662613. The next prime is 13662619. The reversal of 13662616 is 61626631.

It is an interprime number because it is at equal distance from previous prime (13662613) and next prime (13662619).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13662613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8691 + ... + 10141.

It is an arithmetic number, because the mean of its divisors is an integer number (882090).

Almost surely, 2^13662616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13662616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14113440).

13662616 is an abundant number, since it is smaller than the sum of its proper divisors (14564264).

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

13662616 is a wasteful number, since it uses less digits than its factorization.

13662616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1571 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 13662616 is about 3696.2976070658. The cubic root of 13662616 is about 239.0624067467.

The spelling of 13662616 in words is "thirteen million, six hundred sixty-two thousand, six hundred sixteen".