87996993 has 16 divisors (see below), whose sum is σ = 136828800. Its totient is φ = 50283408.

The previous prime is 87996977. The next prime is 87997001. The reversal of 87996993 is 39969978.

It is not a de Polignac number, because 87996993 - 2⁴ = 87996977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87996973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41730 + ... + 43787.

It is an arithmetic number, because the mean of its divisors is an integer number (8551800).

Almost surely, 2^87996993 is an apocalyptic number.

It is an amenable number.

87996993 is a deficient number, since it is larger than the sum of its proper divisors (48831807).

87996993 is an equidigital number, since it uses as much as digits as its factorization.

87996993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85541 (or 85527 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 60.

The square root of 87996993 is about 9380.6712446392. The cubic root of 87996993 is about 444.7909517621.

The spelling of 87996993 in words is "eighty-seven million, nine hundred ninety-six thousand, nine hundred ninety-three".