55632666 has 16 divisors (see below), whose sum is σ = 111384000. Its totient is φ = 18524448.

The previous prime is 55632641. The next prime is 55632667. The reversal of 55632666 is 66623655.

It is not an unprimeable number, because it can be changed into a prime (55632667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875 + ... + 10713.

It is an arithmetic number, because the mean of its divisors is an integer number (6961500).

Almost surely, 2^55632666 is an apocalyptic number.

55632666 is an abundant number, since it is smaller than the sum of its proper divisors (55751334).

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

55632666 is a wasteful number, since it uses less digits than its factorization.

55632666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9893.

The product of its digits is 194400, while the sum is 39.

The square root of 55632666 is about 7458.7308571901. The cubic root of 55632666 is about 381.7478714174.

The spelling of 55632666 in words is "fifty-five million, six hundred thirty-two thousand, six hundred sixty-six".