66877120 has 28 divisors (see below), whose sum is σ = 159251904. Its totient is φ = 26750720.

The previous prime is 66877091. The next prime is 66877121. The reversal of 66877120 is 2177866.

It is a happy number.

It is a super-3 number, since 3×66877120³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66877120.

It is not an unprimeable number, because it can be changed into a prime (66877121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104176 + ... + 104815.

It is an arithmetic number, because the mean of its divisors is an integer number (5687568).

Almost surely, 2^66877120 is an apocalyptic number.

It is an amenable number.

66877120 is an abundant number, since it is smaller than the sum of its proper divisors (92374784).

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

66877120 is a wasteful number, since it uses less digits than its factorization.

66877120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209008 (or 208998 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 66877120 is about 8177.8432364530. The cubic root of 66877120 is about 405.9063580780.

The spelling of 66877120 in words is "sixty-six million, eight hundred seventy-seven thousand, one hundred twenty".