650381855 has 4 divisors (see below), whose sum is σ = 780458232. Its totient is φ = 520305480.

The previous prime is 650381821. The next prime is 650381863. The reversal of 650381855 is 558183056.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 650381855 - 2¹⁶ = 650316319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65038181 + ... + 65038190.

It is an arithmetic number, because the mean of its divisors is an integer number (195114558).

Almost surely, 2^650381855 is an apocalyptic number.

650381855 is a deficient number, since it is larger than the sum of its proper divisors (130076377).

650381855 is a wasteful number, since it uses less digits than its factorization.

650381855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130076376.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 650381855 is about 25502.5852611064. The cubic root of 650381855 is about 866.4087017413.

The spelling of 650381855 in words is "six hundred fifty million, three hundred eighty-one thousand, eight hundred fifty-five".