65365885 has 24 divisors (see below), whose sum is σ = 88351704. Its totient is φ = 46147200.

The previous prime is 65365843. The next prime is 65365889. The reversal of 65365885 is 58856356.

It can be written as a sum of positive squares in 4 ways, for example, as 933156 + 64432729 = 966^2 + 8027^2 .

It is not a de Polignac number, because 65365885 - 2⁹ = 65365373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65365889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33435 + ... + 35335.

It is an arithmetic number, because the mean of its divisors is an integer number (3681321).

Almost surely, 2^65365885 is an apocalyptic number.

65365885 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65365885 is a deficient number, since it is larger than the sum of its proper divisors (22985819).

65365885 is a wasteful number, since it uses less digits than its factorization.

65365885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1942 counting only the distinct ones).

The product of its digits is 864000, while the sum is 46.

The square root of 65365885 is about 8084.9171300639. The cubic root of 65365885 is about 402.8255868981.

It can be divided in two parts, 6536 and 5885, that added together give a palindrome (12421).

The spelling of 65365885 in words is "sixty-five million, three hundred sixty-five thousand, eight hundred eighty-five".