65144874 has 32 divisors (see below), whose sum is σ = 132632640. Its totient is φ = 21327872.

The previous prime is 65144861. The next prime is 65144879. The reversal of 65144874 is 47844156.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65144879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127732 + ... + 128240.

It is an arithmetic number, because the mean of its divisors is an integer number (4144770).

Almost surely, 2^65144874 is an apocalyptic number.

65144874 is an abundant number, since it is smaller than the sum of its proper divisors (67487766).

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

65144874 is a wasteful number, since it uses less digits than its factorization.

65144874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854.

The product of its digits is 107520, while the sum is 39.

The square root of 65144874 is about 8071.2374515932. The cubic root of 65144874 is about 402.3710714461.

The spelling of 65144874 in words is "sixty-five million, one hundred forty-four thousand, eight hundred seventy-four".