65871601 has 4 divisors (see below), whose sum is σ = 66009600. Its totient is φ = 65733604.

The previous prime is 65871569. The next prime is 65871607. The reversal of 65871601 is 10617856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65871601 - 2⁵ = 65871569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65871607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68281 + ... + 69238.

It is an arithmetic number, because the mean of its divisors is an integer number (16502400).

Almost surely, 2^65871601 is an apocalyptic number.

It is an amenable number.

65871601 is a deficient number, since it is larger than the sum of its proper divisors (137999).

65871601 is a wasteful number, since it uses less digits than its factorization.

65871601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137998.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 65871601 is about 8116.1321453017. The cubic root of 65871601 is about 403.8617656824.

The spelling of 65871601 in words is "sixty-five million, eight hundred seventy-one thousand, six hundred one".