87505197 has 8 divisors (see below), whose sum is σ = 125648544. Its totient is φ = 53849328.

The previous prime is 87505189. The next prime is 87505199. The reversal of 87505197 is 79150578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87505197 - 2³ = 87505189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87505199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121823 + ... + 1121900.

It is an arithmetic number, because the mean of its divisors is an integer number (15706068).

Almost surely, 2^87505197 is an apocalyptic number.

It is an amenable number.

87505197 is a deficient number, since it is larger than the sum of its proper divisors (38143347).

87505197 is a wasteful number, since it uses less digits than its factorization.

87505197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243739.

The product of its (nonzero) digits is 88200, while the sum is 42.

The square root of 87505197 is about 9354.4212541450. The cubic root of 87505197 is about 443.9607901013.

The spelling of 87505197 in words is "eighty-seven million, five hundred five thousand, one hundred ninety-seven".