87588405 has 16 divisors (see below), whose sum is σ = 155712960. Its totient is φ = 46713744.

The previous prime is 87588359. The next prime is 87588409. The reversal of 87588405 is 50488578.

It is not a de Polignac number, because 87588405 - 2¹² = 87584309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87588409) 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, 324267 + ... + 324536.

It is an arithmetic number, because the mean of its divisors is an integer number (9732060).

Almost surely, 2^87588405 is an apocalyptic number.

It is an amenable number.

87588405 is a deficient number, since it is larger than the sum of its proper divisors (68124555).

87588405 is a wasteful number, since it uses less digits than its factorization.

87588405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648817 (or 648811 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 87588405 is about 9358.8677199755. The cubic root of 87588405 is about 444.1014651235.

The spelling of 87588405 in words is "eighty-seven million, five hundred eighty-eight thousand, four hundred five".