8740644 has 48 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 2532640.

The previous prime is 8740643. The next prime is 8740649. The reversal of 8740644 is 4460478.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8740643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (483840).

Almost surely, 2^8740644 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 8740644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11612160).

8740644 is an abundant number, since it is smaller than the sum of its proper divisors (14483676).

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

8740644 is a wasteful number, since it uses less digits than its factorization.

8740644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920 (or 2918 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 8740644 is about 2956.4580159373. The cubic root of 8740644 is about 205.9907935685.

The spelling of 8740644 in words is "eight million, seven hundred forty thousand, six hundred forty-four".