65437965 has 12 divisors (see below), whose sum is σ = 113425884. Its totient is φ = 34900224.

The previous prime is 65437951. The next prime is 65437979. The reversal of 65437965 is 56973456.

It is an interprime number because it is at equal distance from previous prime (65437951) and next prime (65437979).

It can be written as a sum of positive squares in 2 ways, for example, as 37527876 + 27910089 = 6126^2 + 5283^2 .

It is not a de Polignac number, because 65437965 - 2⁶ = 65437901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1454177 = 65437965 / (6 + 5 + 4 + 3 + 7 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 65437965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 727044 + ... + 727133.

It is an arithmetic number, because the mean of its divisors is an integer number (9452157).

Almost surely, 2^65437965 is an apocalyptic number.

It is an amenable number.

65437965 is a deficient number, since it is larger than the sum of its proper divisors (47987919).

65437965 is a wasteful number, since it uses less digits than its factorization.

65437965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454188 (or 1454185 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 65437965 is about 8089.3735851424. The cubic root of 65437965 is about 402.9735998978.

The spelling of 65437965 in words is "sixty-five million, four hundred thirty-seven thousand, nine hundred sixty-five".