9621875 has 12 divisors (see below), whose sum is σ = 12030480. Its totient is φ = 7695000.

The previous prime is 9621869. The next prime is 9621877. The reversal of 9621875 is 5781269.

9621875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9621875 - 2¹² = 9617779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9621877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1586 + ... + 4664.

It is an arithmetic number, because the mean of its divisors is an integer number (1002540).

Almost surely, 2^9621875 is an apocalyptic number.

9621875 is a deficient number, since it is larger than the sum of its proper divisors (2408605).

9621875 is an frugal number, since it uses more digits than its factorization.

9621875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3084 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 9621875 is about 3101.9147312587. The cubic root of 9621875 is about 212.6930195470.

Subtracting from 9621875 its reverse (5781269), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 9621875 in words is "nine million, six hundred twenty-one thousand, eight hundred seventy-five".