15654 has 8 divisors (see below), whose sum is σ = 31320. Its totient is φ = 5216.

The previous prime is 15649. The next prime is 15661. The reversal of 15654 is 45651.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

15654 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 15654.

It is a congruent number.

It is an unprimeable number.

15654 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (3915).

2¹⁵⁶⁵⁴ is an apocalyptic number.

15654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15660).

15654 is a wasteful number, since it uses less digits than its factorization.

15654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614.

The product of its digits is 600, while the sum is 21.

The square root of 15654 is about 125.1159462259. The cubic root of 15654 is about 25.0154571078.

It can be divided in two parts, 156 and 54, that added together give a triangular number (210 = T₂₀).

The spelling of 15654 in words is "fifteen thousand, six hundred fifty-four".