855677631 has 4 divisors (see below), whose sum is σ = 1140903512. Its totient is φ = 570451752.

The previous prime is 855677621. The next prime is 855677639. The reversal of 855677631 is 136776558.

855677631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 855677631 - 2¹⁸ = 855415487 is a prime.

It is a super-2 number, since 2×855677631² = 1464368416387544322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855677639) 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, 142612936 + ... + 142612941.

It is an arithmetic number, because the mean of its divisors is an integer number (285225878).

Almost surely, 2^855677631 is an apocalyptic number.

855677631 is a deficient number, since it is larger than the sum of its proper divisors (285225881).

855677631 is a wasteful number, since it uses less digits than its factorization.

855677631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285225880.

The product of its digits is 1058400, while the sum is 48.

The square root of 855677631 is about 29251.9679850775. The cubic root of 855677631 is about 949.3726720801.

The spelling of 855677631 in words is "eight hundred fifty-five million, six hundred seventy-seven thousand, six hundred thirty-one".