7678722346 has 8 divisors (see below), whose sum is σ = 11623754340. Its totient is φ = 3804137568.

The previous prime is 7678722323. The next prime is 7678722353. The reversal of 7678722346 is 6432278767.

It can be written as a sum of positive squares in 2 ways, for example, as 7614482121 + 64240225 = 87261^2 + 8015^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7678722293 and 7678722302.

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, 17611531 + ... + 17611966.

Almost surely, 2^7678722346 is an apocalyptic number.

7678722346 is a deficient number, since it is larger than the sum of its proper divisors (3945031994).

7678722346 is a wasteful number, since it uses less digits than its factorization.

7678722346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35223608.

The product of its digits is 4741632, while the sum is 52.

The square root of 7678722346 is about 87628.3193151620. The cubic root of 7678722346 is about 1972.8602448647.

The spelling of 7678722346 in words is "seven billion, six hundred seventy-eight million, seven hundred twenty-two thousand, three hundred forty-six".