7678569081 has 8 divisors (see below), whose sum is σ = 10256087520. Its totient is φ = 5110048352.

The previous prime is 7678569079. The next prime is 7678569091. The reversal of 7678569081 is 1809658767.

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 7678569081 - 2¹ = 7678569079 is a prime.

It is a super-2 number, since 2×7678569081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7678569071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247435 + ... + 2250848.

It is an arithmetic number, because the mean of its divisors is an integer number (1282010940).

Almost surely, 2^7678569081 is an apocalyptic number.

It is an amenable number.

7678569081 is a deficient number, since it is larger than the sum of its proper divisors (2577518439).

7678569081 is a wasteful number, since it uses less digits than its factorization.

7678569081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498855.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 7678569081 is about 87627.4447932838. Note that the first 3 decimals coincide. The cubic root of 7678569081 is about 1972.8471188774.

The spelling of 7678569081 in words is "seven billion, six hundred seventy-eight million, five hundred sixty-nine thousand, eighty-one".