66485763 has 12 divisors (see below), whose sum is σ = 96540288. Its totient is φ = 44090640.

The previous prime is 66485761. The next prime is 66485767. The reversal of 66485763 is 36758466.

It is not a de Polignac number, because 66485763 - 2¹ = 66485761 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66485761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17620 + ... + 21057.

It is an arithmetic number, because the mean of its divisors is an integer number (8045024).

Almost surely, 2^66485763 is an apocalyptic number.

66485763 is a deficient number, since it is larger than the sum of its proper divisors (30054525).

66485763 is a wasteful number, since it uses less digits than its factorization.

66485763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38874 (or 38871 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 66485763 is about 8153.8802419462. The cubic root of 66485763 is about 405.1130365781.

The spelling of 66485763 in words is "sixty-six million, four hundred eighty-five thousand, seven hundred sixty-three".