65878423 has 16 divisors (see below), whose sum is σ = 72606240. Its totient is φ = 59406336.

The previous prime is 65878409. The next prime is 65878457. The reversal of 65878423 is 32487856.

It is a cyclic number.

It is not a de Polignac number, because 65878423 - 2⁵ = 65878391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65878423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65878403) 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, 111936 + ... + 112522.

It is an arithmetic number, because the mean of its divisors is an integer number (4537890).

Almost surely, 2^65878423 is an apocalyptic number.

65878423 is a deficient number, since it is larger than the sum of its proper divisors (6727817).

65878423 is a wasteful number, since it uses less digits than its factorization.

65878423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its digits is 322560, while the sum is 43.

The square root of 65878423 is about 8116.5524085045. The cubic root of 65878423 is about 403.8757071980.

The spelling of 65878423 in words is "sixty-five million, eight hundred seventy-eight thousand, four hundred twenty-three".