13659690 has 96 divisors (see below), whose sum is σ = 37231488. Its totient is φ = 3203200.

The previous prime is 13659661. The next prime is 13659703. The reversal of 13659690 is 9695631.

It is a super-2 number, since 2×13659690² = 373174261792200, which contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 192355 + ... + 192425.

It is an arithmetic number, because the mean of its divisors is an integer number (387828).

Almost surely, 2^13659690 is an apocalyptic number.

13659690 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 13659690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18615744).

13659690 is an abundant number, since it is smaller than the sum of its proper divisors (23571798).

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

13659690 is a wasteful number, since it uses less digits than its factorization.

13659690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 13659690 is about 3695.9017844093. The cubic root of 13659690 is about 239.0453395773.

The spelling of 13659690 in words is "thirteen million, six hundred fifty-nine thousand, six hundred ninety".