66950860 has 12 divisors (see below), whose sum is σ = 140596848. Its totient is φ = 26780336.

The previous prime is 66950857. The next prime is 66950881. The reversal of 66950860 is 6805966.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673752 + ... + 1673791.

It is an arithmetic number, because the mean of its divisors is an integer number (11716404).

Almost surely, 2^66950860 is an apocalyptic number.

It is an amenable number.

66950860 is an abundant number, since it is smaller than the sum of its proper divisors (73645988).

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

66950860 is a wasteful number, since it uses less digits than its factorization.

66950860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347552 (or 3347550 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 66950860 is about 8182.3505180358. The cubic root of 66950860 is about 406.0554900010.

It can be divided in two parts, 669 and 50860, that added together give a square (51529 = 227²).

The spelling of 66950860 in words is "sixty-six million, nine hundred fifty thousand, eight hundred sixty".