87398475 has 24 divisors (see below), whose sum is σ = 144810672. Its totient is φ = 46512000.

The previous prime is 87398473. The next prime is 87398497. The reversal of 87398475 is 57489378.

It is not a de Polignac number, because 87398475 - 2¹ = 87398473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87398471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45025 + ... + 46925.

It is an arithmetic number, because the mean of its divisors is an integer number (6033778).

Almost surely, 2^87398475 is an apocalyptic number.

87398475 is a deficient number, since it is larger than the sum of its proper divisors (57412197).

87398475 is a wasteful number, since it uses less digits than its factorization.

87398475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2522 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 87398475 is about 9348.7151523618. The cubic root of 87398475 is about 443.7802306985.

The spelling of 87398475 in words is "eighty-seven million, three hundred ninety-eight thousand, four hundred seventy-five".