7978682 has 8 divisors (see below), whose sum is σ = 12260052. Its totient is φ = 3892000.

The previous prime is 7978679. The next prime is 7978699. The reversal of 7978682 is 2868797.

It can be written as a sum of positive squares in 2 ways, for example, as 5058001 + 2920681 = 2249^2 + 1709^2 .

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

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, 48569 + ... + 48732.

Almost surely, 2^7978682 is an apocalyptic number.

7978682 is a deficient number, since it is larger than the sum of its proper divisors (4281370).

7978682 is a wasteful number, since it uses less digits than its factorization.

7978682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97344.

The product of its digits is 338688, while the sum is 47.

The square root of 7978682 is about 2824.6560852606. The cubic root of 7978682 is about 199.8221919684.

The spelling of 7978682 in words is "seven million, nine hundred seventy-eight thousand, six hundred eighty-two".