65672166 has 16 divisors (see below), whose sum is σ = 150107904. Its totient is φ = 18763464.

The previous prime is 65672161. The next prime is 65672177. The reversal of 65672166 is 66127656.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65672161) 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, 781770 + ... + 781853.

It is an arithmetic number, because the mean of its divisors is an integer number (9381744).

Almost surely, 2^65672166 is an apocalyptic number.

65672166 is an abundant number, since it is smaller than the sum of its proper divisors (84435738).

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

65672166 is a wasteful number, since it uses less digits than its factorization.

65672166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563635.

The product of its digits is 90720, while the sum is 39.

The square root of 65672166 is about 8103.8364988442. The cubic root of 65672166 is about 403.4537719842.

The spelling of 65672166 in words is "sixty-five million, six hundred seventy-two thousand, one hundred sixty-six".