65489445 has 64 divisors (see below), whose sum is σ = 136727040. Its totient is φ = 29113344.

The previous prime is 65489429. The next prime is 65489449. The reversal of 65489445 is 54498456.

It is not a de Polignac number, because 65489445 - 2⁴ = 65489429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65489445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65489449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34029 + ... + 35901.

It is an arithmetic number, because the mean of its divisors is an integer number (2136360).

Almost surely, 2^65489445 is an apocalyptic number.

It is an amenable number.

65489445 is an abundant number, since it is smaller than the sum of its proper divisors (71237595).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65489445 is a wasteful number, since it uses less digits than its factorization.

65489445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1925 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 65489445 is about 8092.5549117692. The cubic root of 65489445 is about 403.0792452126.

The spelling of 65489445 in words is "sixty-five million, four hundred eighty-nine thousand, four hundred forty-five".