7981696 has 32 divisors (see below), whose sum is σ = 16058880. Its totient is φ = 3951360.

The previous prime is 7981661. The next prime is 7981711. The reversal of 7981696 is 6961897.

7981696 = 185² + 186² + ... + 311².

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16011 + ... + 16501.

It is an arithmetic number, because the mean of its divisors is an integer number (501840).

Almost surely, 2^7981696 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 7981696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8029440).

7981696 is an abundant number, since it is smaller than the sum of its proper divisors (8077184).

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

7981696 is a wasteful number, since it uses less digits than its factorization.

7981696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 620 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 7981696 is about 2825.1895511629. The cubic root of 7981696 is about 199.8473501865.

The spelling of 7981696 in words is "seven million, nine hundred eighty-one thousand, six hundred ninety-six".