13681650 has 48 divisors (see below), whose sum is σ = 34176384. Its totient is φ = 3622080.

The previous prime is 13681643. The next prime is 13681663. The reversal of 13681650 is 5618631.

13681650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29319 + ... + 29781.

It is an arithmetic number, because the mean of its divisors is an integer number (712008).

Almost surely, 2^13681650 is an apocalyptic number.

13681650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13681650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17088192).

13681650 is an abundant number, since it is smaller than the sum of its proper divisors (20494734).

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

13681650 is a wasteful number, since it uses less digits than its factorization.

13681650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13681650 is about 3698.8714495100. The cubic root of 13681650 is about 239.1733714014.

The spelling of 13681650 in words is "thirteen million, six hundred eighty-one thousand, six hundred fifty".