87167505 has 24 divisors (see below), whose sum is σ = 144135936. Its totient is φ = 44982240.

The previous prime is 87167501. The next prime is 87167519. The reversal of 87167505 is 50576178.

It is not a de Polignac number, because 87167505 - 2² = 87167501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87167501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11392 + ... + 17438.

It is an arithmetic number, because the mean of its divisors is an integer number (6005664).

Almost surely, 2^87167505 is an apocalyptic number.

It is an amenable number.

87167505 is a deficient number, since it is larger than the sum of its proper divisors (56968431).

87167505 is a wasteful number, since it uses less digits than its factorization.

87167505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117 (or 6086 counting only the distinct ones).

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

The square root of 87167505 is about 9336.3539457328. The cubic root of 87167505 is about 443.3889563440.

The spelling of 87167505 in words is "eighty-seven million, one hundred sixty-seven thousand, five hundred five".