7686386730 has 384 divisors, whose sum is σ = 24175272960. Its totient is φ = 1722695040.

The previous prime is 7686386723. The next prime is 7686386759. The reversal of 7686386730 is 376836867.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 71835337 + ... + 71835443.

It is an arithmetic number, because the mean of its divisors is an integer number (62956440).

Almost surely, 2^7686386730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7686386730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12087636480).

7686386730 is an abundant number, since it is smaller than the sum of its proper divisors (16488886230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7686386730 is a wasteful number, since it uses less digits than its factorization.

7686386730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 7686386730 is about 87672.0407541652. The cubic root of 7686386730 is about 1973.5164187159.

The spelling of 7686386730 in words is "seven billion, six hundred eighty-six million, three hundred eighty-six thousand, seven hundred thirty".