87475386647 has 16 divisors (see below), whose sum is σ = 99624016800. Its totient is φ = 76076461440.

The previous prime is 87475386613. The next prime is 87475386653. The reversal of 87475386647 is 74668357478.

It is a cyclic number.

It is not a de Polignac number, because 87475386647 - 2⁸ = 87475386391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87475326647) 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, 1223108 + ... + 1292649.

It is an arithmetic number, because the mean of its divisors is an integer number (6226501050).

Almost surely, 2^87475386647 is an apocalyptic number.

87475386647 is a deficient number, since it is larger than the sum of its proper divisors (12148630153).

87475386647 is a wasteful number, since it uses less digits than its factorization.

87475386647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515906.

The product of its digits is 189665280, while the sum is 65.

The spelling of 87475386647 in words is "eighty-seven billion, four hundred seventy-five million, three hundred eighty-six thousand, six hundred forty-seven".