66141678 has 16 divisors (see below), whose sum is σ = 132380496. Its totient is φ = 22031040.

The previous prime is 66141667. The next prime is 66141689. The reversal of 66141678 is 87614166.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66141667) and next prime (66141689).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7218 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (8273781).

Almost surely, 2^66141678 is an apocalyptic number.

66141678 is an abundant number, since it is smaller than the sum of its proper divisors (66238818).

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

66141678 is a wasteful number, since it uses less digits than its factorization.

66141678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099.

The product of its digits is 48384, while the sum is 39.

The square root of 66141678 is about 8132.7534082868. The cubic root of 66141678 is about 404.4129644877.

The spelling of 66141678 in words is "sixty-six million, one hundred forty-one thousand, six hundred seventy-eight".