855453687 has 32 divisors (see below), whose sum is σ = 1294894080. Its totient is φ = 497589120.

The previous prime is 855453673. The next prime is 855453689. The reversal of 855453687 is 786354558.

It is a happy number.

It is not a de Polignac number, because 855453687 - 2¹⁹ = 854929399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855453689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162978 + ... + 168144.

It is an arithmetic number, because the mean of its divisors is an integer number (40465440).

Almost surely, 2^855453687 is an apocalyptic number.

855453687 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

855453687 is a deficient number, since it is larger than the sum of its proper divisors (439440393).

855453687 is a wasteful number, since it uses less digits than its factorization.

855453687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its digits is 4032000, while the sum is 51.

The square root of 855453687 is about 29248.1398895725. The cubic root of 855453687 is about 949.2898430426.

The spelling of 855453687 in words is "eight hundred fifty-five million, four hundred fifty-three thousand, six hundred eighty-seven".