65180071 has 4 divisors (see below), whose sum is σ = 71105544. Its totient is φ = 59254600.

The previous prime is 65180069. The next prime is 65180077. The reversal of 65180071 is 17008156.

It is a happy number.

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 65180071 - 2¹ = 65180069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65180077) 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, 2962720 + ... + 2962741.

It is an arithmetic number, because the mean of its divisors is an integer number (17776386).

Almost surely, 2^65180071 is an apocalyptic number.

65180071 is a deficient number, since it is larger than the sum of its proper divisors (5925473).

65180071 is a wasteful number, since it uses less digits than its factorization.

65180071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5925472.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 65180071 is about 8073.4175539235. The cubic root of 65180071 is about 402.4435238328.

The spelling of 65180071 in words is "sixty-five million, one hundred eighty thousand, seventy-one".