66162066 has 32 divisors (see below), whose sum is σ = 140875200. Its totient is φ = 20655360.

The previous prime is 66162049. The next prime is 66162067. The reversal of 66162066 is 66026166.

It is not an unprimeable number, because it can be changed into a prime (66162067) 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, 6886 + ... + 13406.

It is an arithmetic number, because the mean of its divisors is an integer number (4402350).

Almost surely, 2^66162066 is an apocalyptic number.

66162066 is an abundant number, since it is smaller than the sum of its proper divisors (74713134).

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

66162066 is a wasteful number, since it uses less digits than its factorization.

66162066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 66162066 is about 8134.0067617380. The cubic root of 66162066 is about 404.4545133000.

The spelling of 66162066 in words is "sixty-six million, one hundred sixty-two thousand, sixty-six".