66680060 has 24 divisors (see below), whose sum is σ = 140253120. Its totient is φ = 26629184.

The previous prime is 66680041. The next prime is 66680071. The reversal of 66680060 is 6008666.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66679999 and 66680026.

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, 12062 + ... + 16698.

It is an arithmetic number, because the mean of its divisors is an integer number (5843880).

Almost surely, 2^66680060 is an apocalyptic number.

It is an amenable number.

66680060 is an abundant number, since it is smaller than the sum of its proper divisors (73573060).

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

66680060 is a wasteful number, since it uses less digits than its factorization.

66680060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365 (or 5363 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 66680060 is about 8165.7859389039. The cubic root of 66680060 is about 405.5072848729.

The spelling of 66680060 in words is "sixty-six million, six hundred eighty thousand, sixty".