7979620 has 96 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 2597760.

The previous prime is 7979599. The next prime is 7979623. The reversal of 7979620 is 269797.

It is not an unprimeable number, because it can be changed into a prime (7979623) 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 31 ways as a sum of consecutive naturals, for example, 96099 + ... + 96181.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

Almost surely, 2^7979620 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 7979620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10160640).

7979620 is an abundant number, since it is smaller than the sum of its proper divisors (12341660).

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

7979620 is a wasteful number, since it uses less digits than its factorization.

7979620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 7979620 is about 2824.8221182935. The cubic root of 7979620 is about 199.8300222454.

The spelling of 7979620 in words is "seven million, nine hundred seventy-nine thousand, six hundred twenty".