87887193 has 4 divisors (see below), whose sum is σ = 117182928. Its totient is φ = 58591460.

The previous prime is 87887143. The next prime is 87887207. The reversal of 87887193 is 39178878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87887193 - 2¹² = 87883097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87887143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14647863 + ... + 14647868.

It is an arithmetic number, because the mean of its divisors is an integer number (29295732).

Almost surely, 2^87887193 is an apocalyptic number.

It is an amenable number.

87887193 is a deficient number, since it is larger than the sum of its proper divisors (29295735).

87887193 is a wasteful number, since it uses less digits than its factorization.

87887193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29295734.

The product of its digits is 677376, while the sum is 51.

The square root of 87887193 is about 9374.8169582131. The cubic root of 87887193 is about 444.6058758415.

The spelling of 87887193 in words is "eighty-seven million, eight hundred eighty-seven thousand, one hundred ninety-three".