655436871 has 6 divisors (see below), whose sum is σ = 946742160. Its totient is φ = 436957908.

The previous prime is 655436867. The next prime is 655436879. The reversal of 655436871 is 178634556.

It is not a de Polignac number, because 655436871 - 2² = 655436867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655436879) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 36413151 + ... + 36413168.

It is an arithmetic number, because the mean of its divisors is an integer number (157790360).

Almost surely, 2^655436871 is an apocalyptic number.

655436871 is a deficient number, since it is larger than the sum of its proper divisors (291305289).

655436871 is a wasteful number, since it uses less digits than its factorization.

655436871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72826325 (or 72826322 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 655436871 is about 25601.5013426947. The cubic root of 655436871 is about 868.6475975706.

The spelling of 655436871 in words is "six hundred fifty-five million, four hundred thirty-six thousand, eight hundred seventy-one".