66236472 has 24 divisors (see below), whose sum is σ = 179390640. Its totient is φ = 22078800.

The previous prime is 66236449. The next prime is 66236473. The reversal of 66236472 is 27463266.

It is a happy number.

66236472 is a `hidden beast` number, since 6 + 6 + 2 + 3 + 647 + 2 = 666.

66236472 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 (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66236473) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 459904 + ... + 460047.

It is an arithmetic number, because the mean of its divisors is an integer number (7474610).

Almost surely, 2^66236472 is an apocalyptic number.

It is an amenable number.

66236472 is an abundant number, since it is smaller than the sum of its proper divisors (113154168).

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

66236472 is a wasteful number, since it uses less digits than its factorization.

66236472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919963 (or 919956 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 66236472 is about 8138.5792371888. The cubic root of 66236472 is about 404.6060733009.

The spelling of 66236472 in words is "sixty-six million, two hundred thirty-six thousand, four hundred seventy-two".