65012771 has 4 divisors (see below), whose sum is σ = 65353344. Its totient is φ = 64672200.

The previous prime is 65012747. The next prime is 65012807. The reversal of 65012771 is 17721056.

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 65012771 - 2¹⁰ = 65011747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65012371) 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, 170000 + ... + 170381.

It is an arithmetic number, because the mean of its divisors is an integer number (16338336).

Almost surely, 2^65012771 is an apocalyptic number.

65012771 is a deficient number, since it is larger than the sum of its proper divisors (340573).

65012771 is a wasteful number, since it uses less digits than its factorization.

65012771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340572.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 65012771 is about 8063.0497331965. The cubic root of 65012771 is about 402.0989067954.

The spelling of 65012771 in words is "sixty-five million, twelve thousand, seven hundred seventy-one".