9620640 has 192 divisors, whose sum is σ = 35925120. Its totient is φ = 2396160.

The previous prime is 9620627. The next prime is 9620641. The reversal of 9620640 is 460269.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9620641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73375 + ... + 73505.

It is an arithmetic number, because the mean of its divisors is an integer number (187110).

Almost surely, 2^9620640 is an apocalyptic number.

9620640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9620640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17962560).

9620640 is an abundant number, since it is smaller than the sum of its proper divisors (26304480).

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

9620640 is a wasteful number, since it uses less digits than its factorization.

9620640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 9620640 is about 3101.7156542791. The cubic root of 9620640 is about 212.6839192030.

It can be divided in two parts, 96 and 20640, that added together give a 4-th power (20736 = 12⁴).

The spelling of 9620640 in words is "nine million, six hundred twenty thousand, six hundred forty".