65441637 has 12 divisors (see below), whose sum is σ = 95464044. Its totient is φ = 43195200.

The previous prime is 65441633. The next prime is 65441639. The reversal of 65441637 is 73614456.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64016001 + 1425636 = 8001^2 + 1194^2 .

It is not a de Polignac number, because 65441637 - 2² = 65441633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65441633) 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, 35088 + ... + 36905.

It is an arithmetic number, because the mean of its divisors is an integer number (7955337).

Almost surely, 2^65441637 is an apocalyptic number.

It is an amenable number.

65441637 is a deficient number, since it is larger than the sum of its proper divisors (30022407).

65441637 is a wasteful number, since it uses less digits than its factorization.

65441637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72100 (or 72097 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 65441637 is about 8089.6005463805. The cubic root of 65441637 is about 402.9811372724.

The spelling of 65441637 in words is "sixty-five million, four hundred forty-one thousand, six hundred thirty-seven".