66318486 has 32 divisors (see below), whose sum is σ = 147452928. Its totient is φ = 19746720.

The previous prime is 66318481. The next prime is 66318491. The reversal of 66318486 is 68481366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66318481) and next prime (66318491).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66318481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11296 + ... + 16131.

It is an arithmetic number, because the mean of its divisors is an integer number (4607904).

Almost surely, 2^66318486 is an apocalyptic number.

66318486 is an abundant number, since it is smaller than the sum of its proper divisors (81134442).

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

66318486 is a wasteful number, since it uses less digits than its factorization.

66318486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27476.

The product of its digits is 165888, while the sum is 42.

The square root of 66318486 is about 8143.6162728852. The cubic root of 66318486 is about 404.7729988382.

The spelling of 66318486 in words is "sixty-six million, three hundred eighteen thousand, four hundred eighty-six".