65812398 has 16 divisors (see below), whose sum is σ = 131748816. Its totient is φ = 21916800.

The previous prime is 65812387. The next prime is 65812427. The reversal of 65812398 is 89321856.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 11772.

It is an arithmetic number, because the mean of its divisors is an integer number (8234301).

Almost surely, 2^65812398 is an apocalyptic number.

65812398 is an abundant number, since it is smaller than the sum of its proper divisors (65936418).

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

65812398 is a wasteful number, since it uses less digits than its factorization.

65812398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339.

The product of its digits is 103680, while the sum is 42.

The square root of 65812398 is about 8112.4840831893. The cubic root of 65812398 is about 403.7407373261.

The spelling of 65812398 in words is "sixty-five million, eight hundred twelve thousand, three hundred ninety-eight".