87105756 has 36 divisors (see below), whose sum is σ = 215914328. Its totient is φ = 27326208.

The previous prime is 87105749. The next prime is 87105757. The reversal of 87105756 is 65750178.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87105757) 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 11 ways as a sum of consecutive naturals, for example, 9091 + ... + 16026.

Almost surely, 2^87105756 is an apocalyptic number.

It is an amenable number.

87105756 is an abundant number, since it is smaller than the sum of its proper divisors (128808572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87105756 is a wasteful number, since it uses less digits than its factorization.

87105756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25158 (or 25139 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 87105756 is about 9333.0464479719. The cubic root of 87105756 is about 443.2842334804.

The spelling of 87105756 in words is "eighty-seven million, one hundred five thousand, seven hundred fifty-six".