7829681 has 8 divisors (see below), whose sum is σ = 8319720. Its totient is φ = 7354368.

The previous prime is 7829671. The next prime is 7829711. The reversal of 7829681 is 1869287.

It can be written as a sum of positive squares in 4 ways, for example, as 2146225 + 5683456 = 1465^2 + 2384^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7829681 - 2⁶ = 7829617 is a prime.

It is a super-2 number, since 2×7829681² = 122607809123522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7829671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (1039965).

Almost surely, 2^7829681 is an apocalyptic number.

It is an amenable number.

7829681 is a deficient number, since it is larger than the sum of its proper divisors (490039).

7829681 is a wasteful number, since it uses less digits than its factorization.

7829681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7363.

The product of its digits is 48384, while the sum is 41.

The square root of 7829681 is about 2798.1567146963. The cubic root of 7829681 is about 198.5704817314.

The spelling of 7829681 in words is "seven million, eight hundred twenty-nine thousand, six hundred eighty-one".