66258980 has 48 divisors (see below), whose sum is σ = 142502976. Its totient is φ = 25872000.

The previous prime is 66258953. The next prime is 66258989. The reversal of 66258980 is 8985266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66258989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263855 + ... + 264105.

It is an arithmetic number, because the mean of its divisors is an integer number (2968812).

Almost surely, 2^66258980 is an apocalyptic number.

It is an amenable number.

66258980 is an abundant number, since it is smaller than the sum of its proper divisors (76243996).

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

66258980 is a wasteful number, since it uses less digits than its factorization.

66258980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 66258980 is about 8139.9619163728. The cubic root of 66258980 is about 404.6518982162.

The spelling of 66258980 in words is "sixty-six million, two hundred fifty-eight thousand, nine hundred eighty".