65771942 has 16 divisors (see below), whose sum is σ = 102414240. Its totient is φ = 31641792.

The previous prime is 65771933. The next prime is 65771947. The reversal of 65771942 is 24917756.

It is a self number, because there is not a number n which added to its sum of digits gives 65771942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65771947) 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, 16343 + ... + 19965.

It is an arithmetic number, because the mean of its divisors is an integer number (6400890).

Almost surely, 2^65771942 is an apocalyptic number.

65771942 is a deficient number, since it is larger than the sum of its proper divisors (36642298).

65771942 is a wasteful number, since it uses less digits than its factorization.

65771942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its digits is 105840, while the sum is 41.

The square root of 65771942 is about 8109.9902589337. The cubic root of 65771942 is about 403.6579916035.

The spelling of 65771942 in words is "sixty-five million, seven hundred seventy-one thousand, nine hundred forty-two".