855072885 has 16 divisors (see below), whose sum is σ = 1448594496. Its totient is φ = 429212928.

The previous prime is 855072877. The next prime is 855072887. The reversal of 855072885 is 588270558.

It is a happy number.

It is not a de Polignac number, because 855072885 - 2³ = 855072877 is a prime.

It is a super-2 number, since 2×855072885² = 1462299277324446450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855072887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1676359 + ... + 1676868.

It is an arithmetic number, because the mean of its divisors is an integer number (90537156).

Almost surely, 2^855072885 is an apocalyptic number.

855072885 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

855072885 is a deficient number, since it is larger than the sum of its proper divisors (593521611).

855072885 is a wasteful number, since it uses less digits than its factorization.

855072885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353252.

The product of its (nonzero) digits is 896000, while the sum is 48.

The square root of 855072885 is about 29241.6293150707. The cubic root of 855072885 is about 949.1489645324.

The spelling of 855072885 in words is "eight hundred fifty-five million, seventy-two thousand, eight hundred eighty-five".