65440254 has 32 divisors (see below), whose sum is σ = 143099136. Its totient is φ = 19785920.

The previous prime is 65440253. The next prime is 65440283. The reversal of 65440254 is 45204456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39919 + ... + 41525.

It is an arithmetic number, because the mean of its divisors is an integer number (4471848).

Almost surely, 2^65440254 is an apocalyptic number.

65440254 is an abundant number, since it is smaller than the sum of its proper divisors (77658882).

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

65440254 is a wasteful number, since it uses less digits than its factorization.

65440254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 65440254 is about 8089.5150658120. The cubic root of 65440254 is about 402.9782984741.

It can be divided in two parts, 654402 and 54, that added together give a palindrome (654456).

The spelling of 65440254 in words is "sixty-five million, four hundred forty thousand, two hundred fifty-four".