65440455 has 16 divisors (see below), whose sum is σ = 104900064. Its totient is φ = 34836480.

The previous prime is 65440421. The next prime is 65440471. The reversal of 65440455 is 55404456.

It is a de Polignac number, because none of the positive numbers 2^k-65440455 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4875 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (6556254).

Almost surely, 2^65440455 is an apocalyptic number.

65440455 is a deficient number, since it is larger than the sum of its proper divisors (39459609).

65440455 is a wasteful number, since it uses less digits than its factorization.

65440455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 65440455 is about 8089.5274892913. The cubic root of 65440455 is about 402.9787110568.

The spelling of 65440455 in words is "sixty-five million, four hundred forty thousand, four hundred fifty-five".