87006855 has 16 divisors (see below), whose sum is σ = 149919840. Its totient is φ = 42834048.

The previous prime is 87006851. The next prime is 87006883. The reversal of 87006855 is 55860078.

It is a happy number.

It is not a de Polignac number, because 87006855 - 2² = 87006851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87006851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222900 + ... + 223289.

It is an arithmetic number, because the mean of its divisors is an integer number (9369990).

Almost surely, 2^87006855 is an apocalyptic number.

87006855 is a deficient number, since it is larger than the sum of its proper divisors (62912985).

87006855 is a wasteful number, since it uses less digits than its factorization.

87006855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446210.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 87006855 is about 9327.7465124220. The cubic root of 87006855 is about 443.1163997302.

The spelling of 87006855 in words is "eighty-seven million, six thousand, eight hundred fifty-five".