865372478 has 8 divisors (see below), whose sum is σ = 1314490080. Its totient is φ = 427209120.

The previous prime is 865372477. The next prime is 865372531. The reversal of 865372478 is 874273568.

865372478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865372477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2738363 + ... + 2738678.

It is an arithmetic number, because the mean of its divisors is an integer number (164311260).

Almost surely, 2^865372478 is an apocalyptic number.

865372478 is a deficient number, since it is larger than the sum of its proper divisors (449117602).

865372478 is a wasteful number, since it uses less digits than its factorization.

865372478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477122.

The product of its digits is 2257920, while the sum is 50.

The square root of 865372478 is about 29417.2139741343. The cubic root of 865372478 is about 952.9446868334.

The spelling of 865372478 in words is "eight hundred sixty-five million, three hundred seventy-two thousand, four hundred seventy-eight".