816877255 has 8 divisors (see below), whose sum is σ = 990358992. Its totient is φ = 646764288.

The previous prime is 816877247. The next prime is 816877267. The reversal of 816877255 is 552778618.

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

It is a cyclic number.

It is not a de Polignac number, because 816877255 - 2³ = 816877247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816877199 and 816877208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841657 + ... + 842626.

It is an arithmetic number, because the mean of its divisors is an integer number (123794874).

Almost surely, 2^816877255 is an apocalyptic number.

816877255 is a deficient number, since it is larger than the sum of its proper divisors (173481737).

816877255 is a wasteful number, since it uses less digits than its factorization.

816877255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684385.

The product of its digits is 940800, while the sum is 49.

The square root of 816877255 is about 28581.0646232781. The cubic root of 816877255 is about 934.8004969601.

The spelling of 816877255 in words is "eight hundred sixteen million, eight hundred seventy-seven thousand, two hundred fifty-five".