87997011 has 8 divisors (see below), whose sum is σ = 122430720. Its totient is φ = 56113992.

The previous prime is 87997009. The next prime is 87997027. The reversal of 87997011 is 11079978.

It is a happy number.

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

It is not a de Polignac number, because 87997011 - 2¹ = 87997009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87997001) 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, 637591 + ... + 637728.

It is an arithmetic number, because the mean of its divisors is an integer number (15303840).

Almost surely, 2^87997011 is an apocalyptic number.

87997011 is a deficient number, since it is larger than the sum of its proper divisors (34433709).

87997011 is a wasteful number, since it uses less digits than its factorization.

87997011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275345.

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 87997011 is about 9380.6722040587. The cubic root of 87997011 is about 444.7909820898.

The spelling of 87997011 in words is "eighty-seven million, nine hundred ninety-seven thousand, eleven".