66478060 has 24 divisors (see below), whose sum is σ = 152295696. Its totient is φ = 24173760.

The previous prime is 66478051. The next prime is 66478067. The reversal of 66478060 is 6087466.

It is a super-2 number, since 2×66478060² = 8838664922727200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66478067) 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 7 ways as a sum of consecutive naturals, for example, 150867 + ... + 151306.

It is an arithmetic number, because the mean of its divisors is an integer number (6345654).

Almost surely, 2^66478060 is an apocalyptic number.

It is an amenable number.

66478060 is an abundant number, since it is smaller than the sum of its proper divisors (85817636).

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

66478060 is a wasteful number, since it uses less digits than its factorization.

66478060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302193 (or 302191 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 66478060 is about 8153.4078764649. The cubic root of 66478060 is about 405.0973905906.

The spelling of 66478060 in words is "sixty-six million, four hundred seventy-eight thousand, sixty".