65726838 has 12 divisors (see below), whose sum is σ = 142408188. Its totient is φ = 21908940.

The previous prime is 65726819. The next prime is 65726839. The reversal of 65726838 is 83862756.

It is a junction number, because it is equal to n+sod(n) for n = 65726793 and 65726802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65726839) 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 5 ways as a sum of consecutive naturals, for example, 1825728 + ... + 1825763.

It is an arithmetic number, because the mean of its divisors is an integer number (11867349).

Almost surely, 2^65726838 is an apocalyptic number.

65726838 is an abundant number, since it is smaller than the sum of its proper divisors (76681350).

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

65726838 is a wasteful number, since it uses less digits than its factorization.

65726838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651499 (or 3651496 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 65726838 is about 8107.2090142046. The cubic root of 65726838 is about 403.5656991918.

It can be divided in two parts, 65726 and 838, that added together give a square (66564 = 258²).

The spelling of 65726838 in words is "sixty-five million, seven hundred twenty-six thousand, eight hundred thirty-eight".