16365636 has 72 divisors (see below), whose sum is σ = 47820864. Its totient is φ = 4622400.

The previous prime is 16365617. The next prime is 16365649. The reversal of 16365636 is 63656361.

It is a happy number.

16365636 is a `hidden beast` number, since 16 + 3 + 6 + 5 + 636 = 666.

16365636 is digitally balanced in base 2 and base 4, because in such bases 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 (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 16365636.

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, 25131 + ... + 25773.

Almost surely, 2^16365636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16365636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23910432).

16365636 is an abundant number, since it is smaller than the sum of its proper divisors (31455228).

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

16365636 is a wasteful number, since it uses less digits than its factorization.

16365636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 756 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 16365636 is about 4045.4463288987. The cubic root of 16365636 is about 253.8892401541.

The spelling of 16365636 in words is "sixteen million, three hundred sixty-five thousand, six hundred thirty-six".