66104161 has 8 divisors (see below), whose sum is σ = 66776864. Its totient is φ = 65435040.

The previous prime is 66104153. The next prime is 66104167. The reversal of 66104161 is 16140166.

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

It is a cyclic number.

It is not a de Polignac number, because 66104161 - 2³ = 66104153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66104167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49381 + ... + 50701.

It is an arithmetic number, because the mean of its divisors is an integer number (8347108).

Almost surely, 2^66104161 is an apocalyptic number.

It is an amenable number.

66104161 is a deficient number, since it is larger than the sum of its proper divisors (672703).

66104161 is a wasteful number, since it uses less digits than its factorization.

66104161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66104161 is about 8130.4465437023. The cubic root of 66104161 is about 404.3364860793.

The spelling of 66104161 in words is "sixty-six million, one hundred four thousand, one hundred sixty-one".