7440680 has 64 divisors (see below), whose sum is σ = 18522000. Its totient is φ = 2672640.

The previous prime is 7440659. The next prime is 7440689. The reversal of 7440680 is 860447.

It can be written as a sum of positive squares in 8 ways, for example, as 917764 + 6522916 = 958^2 + 2554^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21146 + ... + 21494.

Almost surely, 2^7440680 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 7440680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9261000).

7440680 is an abundant number, since it is smaller than the sum of its proper divisors (11081320).

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

7440680 is a wasteful number, since it uses less digits than its factorization.

7440680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 7440680 is about 2727.7609865969. The cubic root of 7440680 is about 195.2259489153.

The spelling of 7440680 in words is "seven million, four hundred forty thousand, six hundred eighty".