66161066 has 32 divisors (see below), whose sum is σ = 104976000. Its totient is φ = 31245760.

The previous prime is 66161057. The next prime is 66161083. The reversal of 66161066 is 66016166.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443960 + ... + 444108.

It is an arithmetic number, because the mean of its divisors is an integer number (3280500).

Almost surely, 2^66161066 is an apocalyptic number.

66161066 is a deficient number, since it is larger than the sum of its proper divisors (38814934).

66161066 is a wasteful number, since it uses less digits than its factorization.

66161066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66161066 is about 8133.9452911856. The cubic root of 66161066 is about 404.4524755938.

The spelling of 66161066 in words is "sixty-six million, one hundred sixty-one thousand, sixty-six".