87646845 has 64 divisors (see below), whose sum is σ = 170553600. Its totient is φ = 37847040.

The previous prime is 87646843. The next prime is 87646879. The reversal of 87646845 is 54864678.

It is not a de Polignac number, because 87646845 - 2¹ = 87646843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87646794 and 87646803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87646841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61501 + ... + 62909.

It is an arithmetic number, because the mean of its divisors is an integer number (2664900).

Almost surely, 2^87646845 is an apocalyptic number.

It is an amenable number.

87646845 is a deficient number, since it is larger than the sum of its proper divisors (82906755).

87646845 is a wasteful number, since it uses less digits than its factorization.

87646845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470.

The product of its digits is 1290240, while the sum is 48.

The square root of 87646845 is about 9361.9893719230. The cubic root of 87646845 is about 444.2002130482.

The spelling of 87646845 in words is "eighty-seven million, six hundred forty-six thousand, eight hundred forty-five".