87864255 has 36 divisors (see below), whose sum is σ = 159250728. Its totient is φ = 44811360.

The previous prime is 87864251. The next prime is 87864311. The reversal of 87864255 is 55246878.

It is not a de Polignac number, because 87864255 - 2² = 87864251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87864255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87864251) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21960 + ... + 25650.

Almost surely, 2^87864255 is an apocalyptic number.

87864255 is a deficient number, since it is larger than the sum of its proper divisors (71386473).

87864255 is a wasteful number, since it uses less digits than its factorization.

87864255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748 (or 3722 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 87864255 is about 9373.5934944929. The cubic root of 87864255 is about 444.5671927046.

It can be divided in two parts, 8786 and 4255, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 87864255 in words is "eighty-seven million, eight hundred sixty-four thousand, two hundred fifty-five".