65275518 has 64 divisors (see below), whose sum is σ = 169869312. Its totient is φ = 16214880.

The previous prime is 65275513. The next prime is 65275519. The reversal of 65275518 is 81557256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65275513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7555 + ... + 13697.

It is an arithmetic number, because the mean of its divisors is an integer number (2654208).

Almost surely, 2^65275518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65275518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84934656).

65275518 is an abundant number, since it is smaller than the sum of its proper divisors (104593794).

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

65275518 is a wasteful number, since it uses less digits than its factorization.

65275518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189.

The product of its digits is 84000, while the sum is 39.

The square root of 65275518 is about 8079.3265808482. The cubic root of 65275518 is about 402.6398685744.

The spelling of 65275518 in words is "sixty-five million, two hundred seventy-five thousand, five hundred eighteen".