66334980 has 24 divisors (see below), whose sum is σ = 185738112. Its totient is φ = 17689312.

The previous prime is 66334973. The next prime is 66334981. The reversal of 66334980 is 8943366.

It is not an unprimeable number, because it can be changed into a prime (66334981) 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 7 ways as a sum of consecutive naturals, for example, 552732 + ... + 552851.

It is an arithmetic number, because the mean of its divisors is an integer number (7739088).

Almost surely, 2^66334980 is an apocalyptic number.

66334980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66334980 is an abundant number, since it is smaller than the sum of its proper divisors (119403132).

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

66334980 is a wasteful number, since it uses less digits than its factorization.

66334980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105595 (or 1105593 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 66334980 is about 8144.6289049901. The cubic root of 66334980 is about 404.8065529438.

The spelling of 66334980 in words is "sixty-six million, three hundred thirty-four thousand, nine hundred eighty".