65002040 has 96 divisors (see below), whose sum is σ = 160866000. Its totient is φ = 23569920.

The previous prime is 65002039. The next prime is 65002057. The reversal of 65002040 is 4020056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 730316 + ... + 730404.

Almost surely, 2^65002040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65002040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80433000).

65002040 is an abundant number, since it is smaller than the sum of its proper divisors (95863960).

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

65002040 is a wasteful number, since it uses less digits than its factorization.

65002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 65002040 is about 8062.3842627352. The cubic root of 65002040 is about 402.0767821126.

Adding to 65002040 its reverse (4020056), we get a palindrome (69022096).

The spelling of 65002040 in words is "sixty-five million, two thousand, forty".