87594021 has 8 divisors (see below), whose sum is σ = 129768960. Its totient is φ = 58395996.

The previous prime is 87594011. The next prime is 87594037. The reversal of 87594021 is 12049578.

It is not a de Polignac number, because 87594021 - 2⁹ = 87593509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87594011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622085 + ... + 1622138.

It is an arithmetic number, because the mean of its divisors is an integer number (16221120).

Almost surely, 2^87594021 is an apocalyptic number.

It is an amenable number.

87594021 is a deficient number, since it is larger than the sum of its proper divisors (42174939).

87594021 is a wasteful number, since it uses less digits than its factorization.

87594021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244232 (or 3244226 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 87594021 is about 9359.1677514617. The cubic root of 87594021 is about 444.1109565645.

The spelling of 87594021 in words is "eighty-seven million, five hundred ninety-four thousand, twenty-one".