13646990 has 24 divisors (see below), whose sum is σ = 28576152. Its totient is φ = 4678800.

The previous prime is 13646987. The next prime is 13646999. The reversal of 13646990 is 9964631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13646999) 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 11 ways as a sum of consecutive naturals, for example, 13436 + ... + 14415.

It is an arithmetic number, because the mean of its divisors is an integer number (1190673).

Almost surely, 2^13646990 is an apocalyptic number.

13646990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13646990 is an abundant number, since it is smaller than the sum of its proper divisors (14929162).

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

13646990 is a wasteful number, since it uses less digits than its factorization.

13646990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27872 (or 27865 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 13646990 is about 3694.1832656218. The cubic root of 13646990 is about 238.9712330356.

The spelling of 13646990 in words is "thirteen million, six hundred forty-six thousand, nine hundred ninety".