855677633 has 4 divisors (see below), whose sum is σ = 871822548. Its totient is φ = 839532720.

The previous prime is 855677621. The next prime is 855677639. The reversal of 855677633 is 336776558.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 297631504 + 558046129 = 17252^2 + 23623^2 .

It is not a de Polignac number, because 855677633 - 2⁴ = 855677617 is a prime.

It is a super-3 number, since 3×855677633³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855677639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8072378 + ... + 8072483.

It is an arithmetic number, because the mean of its divisors is an integer number (217955637).

Almost surely, 2^855677633 is an apocalyptic number.

It is an amenable number.

855677633 is a deficient number, since it is larger than the sum of its proper divisors (16144915).

855677633 is a wasteful number, since it uses less digits than its factorization.

855677633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144914.

The product of its digits is 3175200, while the sum is 50.

The square root of 855677633 is about 29251.9680192633. The cubic root of 855677633 is about 949.3726728198.

The spelling of 855677633 in words is "eight hundred fifty-five million, six hundred seventy-seven thousand, six hundred thirty-three".