66477632 has 28 divisors (see below), whose sum is σ = 142065756. Its totient is φ = 30681600.

The previous prime is 66477629. The next prime is 66477643. The reversal of 66477632 is 23677466.

It can be written as a sum of positive squares in 2 ways, for example, as 15555136 + 50922496 = 3944^2 + 7136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66477632.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39119 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (5073777).

Almost surely, 2^66477632 is an apocalyptic number.

It is an amenable number.

66477632 is an abundant number, since it is smaller than the sum of its proper divisors (75588124).

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

66477632 is a wasteful number, since it uses less digits than its factorization.

66477632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79926 (or 79916 counting only the distinct ones).

The product of its digits is 254016, while the sum is 41.

The square root of 66477632 is about 8153.3816297289. The cubic root of 66477632 is about 405.0965212208.

The spelling of 66477632 in words is "sixty-six million, four hundred seventy-seven thousand, six hundred thirty-two".