36665520 has 80 divisors (see below), whose sum is σ = 116763360. Its totient is φ = 9510912.

The previous prime is 36665513. The next prime is 36665537. The reversal of 36665520 is 2556663.

36665520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6816 + ... + 10944.

It is an arithmetic number, because the mean of its divisors is an integer number (1459542).

Almost surely, 2^36665520 is an apocalyptic number.

36665520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36665520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58381680).

36665520 is an abundant number, since it is smaller than the sum of its proper divisors (80097840).

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

36665520 is a wasteful number, since it uses less digits than its factorization.

36665520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 36665520 is about 6055.2060245709. The cubic root of 36665520 is about 332.2150346419.

The spelling of 36665520 in words is "thirty-six million, six hundred sixty-five thousand, five hundred twenty".