7921704 has 64 divisors (see below), whose sum is σ = 23034240. Its totient is φ = 2223360.

The previous prime is 7921703. The next prime is 7921723. The reversal of 7921704 is 4071297.

It is not an unprimeable number, because it can be changed into a prime (7921703) 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, 9862 + ... + 10634.

It is an arithmetic number, because the mean of its divisors is an integer number (359910).

Almost surely, 2^7921704 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 7921704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11517120).

7921704 is an abundant number, since it is smaller than the sum of its proper divisors (15112536).

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

7921704 is a wasteful number, since it uses less digits than its factorization.

7921704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 7921704 is about 2814.5521846290. The cubic root of 7921704 is about 199.3453931200.

The spelling of 7921704 in words is "seven million, nine hundred twenty-one thousand, seven hundred four".