66480183 has 144 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 30792960.

The previous prime is 66480173. The next prime is 66480223. The reversal of 66480183 is 38108466.

It is a happy number.

66480183 is a `hidden beast` number, since 6 + 648 + 0 + 1 + 8 + 3 = 666.

It is not a de Polignac number, because 66480183 - 2¹⁸ = 66218039 is a prime.

It is a super-2 number, since 2×66480183² = 8839229463426978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66480133) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3498948 + ... + 3498966.

It is an arithmetic number, because the mean of its divisors is an integer number (968240).

Almost surely, 2^66480183 is an apocalyptic number.

66480183 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

66480183 is an abundant number, since it is smaller than the sum of its proper divisors (72946377).

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

66480183 is a wasteful number, since it uses less digits than its factorization.

66480183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 66480183 is about 8153.5380663857. The cubic root of 66480183 is about 405.1017028535.

It can be divided in two parts, 66 and 480183, that added together give a square (480249 = 693²).

The spelling of 66480183 in words is "sixty-six million, four hundred eighty thousand, one hundred eighty-three".