7696821 has 16 divisors (see below), whose sum is σ = 11266560. Its totient is φ = 4635120.

The previous prime is 7696811. The next prime is 7696823. The reversal of 7696821 is 1286967.

It is not a de Polignac number, because 7696821 - 2⁷ = 7696693 is a prime.

It is a Curzon number.

7696821 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7696821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7696823) 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, 5256 + ... + 6558.

It is an arithmetic number, because the mean of its divisors is an integer number (704160).

Almost surely, 2^7696821 is an apocalyptic number.

It is an amenable number.

7696821 is a deficient number, since it is larger than the sum of its proper divisors (3569739).

7696821 is a wasteful number, since it uses less digits than its factorization.

7696821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its digits is 36288, while the sum is 39.

The square root of 7696821 is about 2774.3145099285. The cubic root of 7696821 is about 197.4409031111.

The spelling of 7696821 in words is "seven million, six hundred ninety-six thousand, eight hundred twenty-one".