65122878 has 32 divisors (see below), whose sum is σ = 134968320. Its totient is φ = 20926080.

The previous prime is 65122877. The next prime is 65122927. The reversal of 65122878 is 87822156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65122873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64038 + ... + 65046.

It is an arithmetic number, because the mean of its divisors is an integer number (4217760).

Almost surely, 2^65122878 is an apocalyptic number.

65122878 is an abundant number, since it is smaller than the sum of its proper divisors (69845442).

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

65122878 is a wasteful number, since it uses less digits than its factorization.

65122878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its digits is 53760, while the sum is 39.

The square root of 65122878 is about 8069.8747202172. The cubic root of 65122878 is about 402.3257798273.

The spelling of 65122878 in words is "sixty-five million, one hundred twenty-two thousand, eight hundred seventy-eight".