65161071 has 8 divisors (see below), whose sum is σ = 96534960. Its totient is φ = 43440696.

The previous prime is 65161069. The next prime is 65161073. The reversal of 65161071 is 17016156.

65161071 is a `hidden beast` number, since 651 + 6 + 1 + 0 + 7 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (65161069) and next prime (65161073).

It is not a de Polignac number, because 65161071 - 2¹ = 65161069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2413373 = 65161071 / (6 + 5 + 1 + 6 + 1 + 0 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65161073) 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, 1206660 + ... + 1206713.

It is an arithmetic number, because the mean of its divisors is an integer number (12066870).

Almost surely, 2^65161071 is an apocalyptic number.

65161071 is a deficient number, since it is larger than the sum of its proper divisors (31373889).

65161071 is a wasteful number, since it uses less digits than its factorization.

65161071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413382 (or 2413376 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 65161071 is about 8072.2407669742. The cubic root of 65161071 is about 402.4044159176.

The spelling of 65161071 in words is "sixty-five million, one hundred sixty-one thousand, seventy-one".