65772163 has 4 divisors (see below), whose sum is σ = 65795400. Its totient is φ = 65748928.

The previous prime is 65772149. The next prime is 65772221. The reversal of 65772163 is 36127756.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65772163 - 2⁵ = 65772131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65772103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (16448850).

Almost surely, 2^65772163 is an apocalyptic number.

65772163 is a deficient number, since it is larger than the sum of its proper divisors (23237).

65772163 is a wasteful number, since it uses less digits than its factorization.

65772163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23236.

The product of its digits is 52920, while the sum is 37.

The square root of 65772163 is about 8110.0038840928. The cubic root of 65772163 is about 403.6584437128.

The spelling of 65772163 in words is "sixty-five million, seven hundred seventy-two thousand, one hundred sixty-three".