13669650 has 72 divisors (see below), whose sum is σ = 37764324. Its totient is φ = 3542400.

The previous prime is 13669639. The next prime is 13669661. The reversal of 13669650 is 5696631.

It is an interprime number because it is at equal distance from previous prime (13669639) and next prime (13669661).

It can be written as a sum of positive squares in 6 ways, for example, as 6395841 + 7273809 = 2529^2 + 2697^2 .

It is a super-2 number, since 2×13669650² = 373718662245000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16240 + ... + 17060.

Almost surely, 2^13669650 is an apocalyptic number.

13669650 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 13669650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18882162).

13669650 is an abundant number, since it is smaller than the sum of its proper divisors (24094674).

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

13669650 is a wasteful number, since it uses less digits than its factorization.

13669650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 13669650 is about 3697.2489772803. The cubic root of 13669650 is about 239.1034256476.

The spelling of 13669650 in words is "thirteen million, six hundred sixty-nine thousand, six hundred fifty".