65726878 has 8 divisors (see below), whose sum is σ = 112674672. Its totient is φ = 28168656.

The previous prime is 65726873. The next prime is 65726917. The reversal of 65726878 is 87862756.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65726873) 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 3 ways as a sum of consecutive naturals, for example, 2347375 + ... + 2347402.

It is an arithmetic number, because the mean of its divisors is an integer number (14084334).

Almost surely, 2^65726878 is an apocalyptic number.

65726878 is a deficient number, since it is larger than the sum of its proper divisors (46947794).

65726878 is a wasteful number, since it uses less digits than its factorization.

65726878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694786.

The product of its digits is 1128960, while the sum is 49.

The square root of 65726878 is about 8107.2114811444. The cubic root of 65726878 is about 403.5657810591.

The spelling of 65726878 in words is "sixty-five million, seven hundred twenty-six thousand, eight hundred seventy-eight".