66845882 has 8 divisors (see below), whose sum is σ = 100323252. Its totient is φ = 33404800.

The previous prime is 66845839. The next prime is 66845903. The reversal of 66845882 is 28854866.

It can be written as a sum of positive squares in 2 ways, for example, as 56535361 + 10310521 = 7519^2 + 3211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3869 + ... + 12192.

Almost surely, 2^66845882 is an apocalyptic number.

66845882 is a deficient number, since it is larger than the sum of its proper divisors (33477370).

66845882 is a wasteful number, since it uses less digits than its factorization.

66845882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18144.

The product of its digits is 737280, while the sum is 47.

The square root of 66845882 is about 8175.9330965952. The cubic root of 66845882 is about 405.8431492280.

The spelling of 66845882 in words is "sixty-six million, eight hundred forty-five thousand, eight hundred eighty-two".