65706077 has 4 divisors (see below), whose sum is σ = 66069276. Its totient is φ = 65342880.

The previous prime is 65706049. The next prime is 65706103. The reversal of 65706077 is 77060756.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9665881 + 56040196 = 3109^2 + 7486^2 .

It is a cyclic number.

It is not a de Polignac number, because 65706077 - 2⁶ = 65706013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65706077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65706007) 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, 181328 + ... + 181689.

It is an arithmetic number, because the mean of its divisors is an integer number (16517319).

Almost surely, 2^65706077 is an apocalyptic number.

It is an amenable number.

65706077 is a deficient number, since it is larger than the sum of its proper divisors (363199).

65706077 is a wasteful number, since it uses less digits than its factorization.

65706077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363198.

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 65706077 is about 8105.9285094306. The cubic root of 65706077 is about 403.5232035637.

The spelling of 65706077 in words is "sixty-five million, seven hundred six thousand, seventy-seven".