9621504 has 130 divisors (see below), whose sum is σ = 29733330. Its totient is φ = 3096576.

The previous prime is 9621503. The next prime is 9621509. The reversal of 9621504 is 4051269.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 1327104 = 2880^2 + 1152^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9621503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 331762 + ... + 331790.

Almost surely, 2^9621504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9621504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14866665).

9621504 is an abundant number, since it is smaller than the sum of its proper divisors (20111826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9621504 is an equidigital number, since it uses as much as digits as its factorization.

9621504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 9621504 is about 3101.8549289095. The cubic root of 9621504 is about 212.6902858413.

The spelling of 9621504 in words is "nine million, six hundred twenty-one thousand, five hundred four".