66614980 has 24 divisors (see below), whose sum is σ = 142869888. Its totient is φ = 26078688.

The previous prime is 66614957. The next prime is 66614981. The reversal of 66614980 is 8941666.

It is not an unprimeable number, because it can be changed into a prime (66614981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34494 + ... + 36373.

It is an arithmetic number, because the mean of its divisors is an integer number (5952912).

Almost surely, 2^66614980 is an apocalyptic number.

It is an amenable number.

66614980 is an abundant number, since it is smaller than the sum of its proper divisors (76254908).

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

66614980 is a wasteful number, since it uses less digits than its factorization.

66614980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70923 (or 70921 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 66614980 is about 8161.8000465584. The cubic root of 66614980 is about 405.3753163631.

The spelling of 66614980 in words is "sixty-six million, six hundred fourteen thousand, nine hundred eighty".