87105790 has 32 divisors (see below), whose sum is σ = 168311520. Its totient is φ = 32338944.

The previous prime is 87105757. The next prime is 87105793. The reversal of 87105790 is 9750178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87105793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8901 + ... + 15919.

It is an arithmetic number, because the mean of its divisors is an integer number (5259735).

Almost surely, 2^87105790 is an apocalyptic number.

87105790 is a deficient number, since it is larger than the sum of its proper divisors (81205730).

87105790 is a wasteful number, since it uses less digits than its factorization.

87105790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7116.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 87105790 is about 9333.0482694562. The cubic root of 87105790 is about 443.2842911561.

The spelling of 87105790 in words is "eighty-seven million, one hundred five thousand, seven hundred ninety".