65705771 has 8 divisors (see below), whose sum is σ = 68429184. Its totient is φ = 63020160.

The previous prime is 65705753. The next prime is 65705791. The reversal of 65705771 is 17750756.

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 65705771 - 2⁶ = 65705707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65705791) 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, 5876 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (8553648).

Almost surely, 2^65705771 is an apocalyptic number.

65705771 is a deficient number, since it is larger than the sum of its proper divisors (2723413).

65705771 is a wasteful number, since it uses less digits than its factorization.

65705771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18901.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 65705771 is about 8105.9096343347. The cubic root of 65705771 is about 403.5225771463.

The spelling of 65705771 in words is "sixty-five million, seven hundred five thousand, seven hundred seventy-one".