7686785957 has 8 divisors (see below), whose sum is σ = 7797155520. Its totient is φ = 7576839360.

The previous prime is 7686785879. The next prime is 7686785959. The reversal of 7686785957 is 7595876867.

It is a happy number.

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 7686785957 - 2¹⁸ = 7686523813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7686785959) 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, 69044 + ... + 141917.

It is an arithmetic number, because the mean of its divisors is an integer number (974644440).

Almost surely, 2^7686785957 is an apocalyptic number.

It is an amenable number.

7686785957 is a deficient number, since it is larger than the sum of its proper divisors (110369563).

7686785957 is a wasteful number, since it uses less digits than its factorization.

7686785957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211483.

The product of its digits is 177811200, while the sum is 68.

The square root of 7686785957 is about 87674.3175451055. The cubic root of 7686785957 is about 1973.5505859359.

The spelling of 7686785957 in words is "seven billion, six hundred eighty-six million, seven hundred eighty-five thousand, nine hundred fifty-seven".