7678688109 has 8 divisors (see below), whose sum is σ = 10242485952. Its totient is φ = 5117007840.

The previous prime is 7678688093. The next prime is 7678688111. The reversal of 7678688109 is 9018868767.

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

It is not a de Polignac number, because 7678688109 - 2⁴ = 7678688093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7678688159) 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, 520912 + ... + 535449.

It is an arithmetic number, because the mean of its divisors is an integer number (1280310744).

Almost surely, 2^7678688109 is an apocalyptic number.

It is an amenable number.

7678688109 is a deficient number, since it is larger than the sum of its proper divisors (2563797843).

7678688109 is a wasteful number, since it uses less digits than its factorization.

7678688109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058787.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The square root of 7678688109 is about 87628.1239614315. The cubic root of 7678688109 is about 1972.8573127399.

The spelling of 7678688109 in words is "seven billion, six hundred seventy-eight million, six hundred eighty-eight thousand, one hundred nine".