66074418 has 24 divisors (see below), whose sum is σ = 143769600. Its totient is φ = 21931224.

The previous prime is 66074413. The next prime is 66074447. The reversal of 66074418 is 81447066.

66074418 is a `hidden beast` number, since 6 + 607 + 4 + 41 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (66074413) 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, 3378 + ... + 11981.

It is an arithmetic number, because the mean of its divisors is an integer number (5990400).

Almost surely, 2^66074418 is an apocalyptic number.

66074418 is an abundant number, since it is smaller than the sum of its proper divisors (77695182).

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

66074418 is a wasteful number, since it uses less digits than its factorization.

66074418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15606 (or 15603 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 66074418 is about 8128.6172255803. The cubic root of 66074418 is about 404.2758344044.

It can be divided in two parts, 6607 and 4418, that added together give a square (11025 = 105²).

The spelling of 66074418 in words is "sixty-six million, seventy-four thousand, four hundred eighteen".