65156838 has 16 divisors (see below), whose sum is σ = 135979776. Its totient is φ = 20774600.

The previous prime is 65156837. The next prime is 65156843. The reversal of 65156838 is 83865156.

It is a self number, because there is not a number n which added to its sum of digits gives 65156838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65156837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235938 + ... + 236213.

It is an arithmetic number, because the mean of its divisors is an integer number (8498736).

Almost surely, 2^65156838 is an apocalyptic number.

65156838 is an abundant number, since it is smaller than the sum of its proper divisors (70822938).

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

65156838 is a wasteful number, since it uses less digits than its factorization.

65156838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472179.

The product of its digits is 172800, while the sum is 42.

The square root of 65156838 is about 8071.9785678605. The cubic root of 65156838 is about 402.3957020503.

The spelling of 65156838 in words is "sixty-five million, one hundred fifty-six thousand, eight hundred thirty-eight".