87845993 has 8 divisors (see below), whose sum is σ = 91967616. Its totient is φ = 83749600.

The previous prime is 87845983. The next prime is 87846001. The reversal of 87845993 is 39954878.

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

It is a cyclic number.

It is not a de Polignac number, because 87845993 - 2⁴ = 87845977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87845983) 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, 1013 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (11495952).

Almost surely, 2^87845993 is an apocalyptic number.

It is an amenable number.

87845993 is a deficient number, since it is larger than the sum of its proper divisors (4121623).

87845993 is a wasteful number, since it uses less digits than its factorization.

87845993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12615.

The product of its digits is 2177280, while the sum is 53.

The square root of 87845993 is about 9372.6193243938. The cubic root of 87845993 is about 444.5363904608.

The spelling of 87845993 in words is "eighty-seven million, eight hundred forty-five thousand, nine hundred ninety-three".