65123885 has 8 divisors (see below), whose sum is σ = 80261016. Its totient is φ = 50690880.

The previous prime is 65123873. The next prime is 65123917. The reversal of 65123885 is 58832156.

It can be written as a sum of positive squares in 4 ways, for example, as 1857769 + 63266116 = 1363^2 + 7954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65123885 - 2⁴ = 65123869 is a prime.

It is a super-2 number, since 2×65123885² = 8482240794986450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175826 + ... + 176195.

It is an arithmetic number, because the mean of its divisors is an integer number (10032627).

Almost surely, 2^65123885 is an apocalyptic number.

It is an amenable number.

65123885 is a deficient number, since it is larger than the sum of its proper divisors (15137131).

65123885 is a wasteful number, since it uses less digits than its factorization.

65123885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352063.

The product of its digits is 57600, while the sum is 38.

The square root of 65123885 is about 8069.9371125183. The cubic root of 65123885 is about 402.3278535480.

The spelling of 65123885 in words is "sixty-five million, one hundred twenty-three thousand, eight hundred eighty-five".