66657068 has 48 divisors (see below), whose sum is σ = 129153024. Its totient is φ = 29963520.

The previous prime is 66657067. The next prime is 66657077. The reversal of 66657068 is 86075666.

It is not an unprimeable number, because it can be changed into a prime (66657067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216971 + ... + 217277.

It is an arithmetic number, because the mean of its divisors is an integer number (2690688).

Almost surely, 2^66657068 is an apocalyptic number.

66657068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66657068 is a deficient number, since it is larger than the sum of its proper divisors (62495956).

66657068 is a wasteful number, since it uses less digits than its factorization.

66657068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 66657068 is about 8164.3779922294. The cubic root of 66657068 is about 405.4606717610.

The spelling of 66657068 in words is "sixty-six million, six hundred fifty-seven thousand, sixty-eight".