65507071 has 12 divisors (see below), whose sum is σ = 76447488. Its totient is φ = 55968192.

The previous prime is 65507063. The next prime is 65507081. The reversal of 65507071 is 17070556.

It is not a de Polignac number, because 65507071 - 2³ = 65507063 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 (65507011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14530 + ... + 18496.

It is an arithmetic number, because the mean of its divisors is an integer number (6370624).

Almost surely, 2^65507071 is an apocalyptic number.

65507071 is a deficient number, since it is larger than the sum of its proper divisors (10940417).

65507071 is a wasteful number, since it uses less digits than its factorization.

65507071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318 (or 4311 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 65507071 is about 8093.6438641690. The cubic root of 65507071 is about 403.1154039019.

The spelling of 65507071 in words is "sixty-five million, five hundred seven thousand, seventy-one".