66320360 has 16 divisors (see below), whose sum is σ = 149220900. Its totient is φ = 26528128.

The previous prime is 66320341. The next prime is 66320363. The reversal of 66320360 is 6302366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66161956 + 158404 = 8134^2 + 398^2 .

It is not an unprimeable number, because it can be changed into a prime (66320363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828965 + ... + 829044.

Almost surely, 2^66320360 is an apocalyptic number.

It is an amenable number.

66320360 is an abundant number, since it is smaller than the sum of its proper divisors (82900540).

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

66320360 is a wasteful number, since it uses less digits than its factorization.

66320360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658020 (or 1658016 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 66320360 is about 8143.7313315212. The cubic root of 66320360 is about 404.7768114376.

The spelling of 66320360 in words is "sixty-six million, three hundred twenty thousand, three hundred sixty".