6686687070 has 96 divisors (see below), whose sum is σ = 19884054528. Its totient is φ = 1527228864.

The previous prime is 6686687057. The next prime is 6686687083. The reversal of 6686687070 is 707866866.

It is an interprime number because it is at equal distance from previous prime (6686687057) and next prime (6686687083).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6686686998 and 6686687016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1047027 + ... + 1053393.

It is an arithmetic number, because the mean of its divisors is an integer number (207125568).

Almost surely, 2^6686687070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6686687070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9942027264).

6686687070 is an abundant number, since it is smaller than the sum of its proper divisors (13197367458).

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

6686687070 is a wasteful number, since it uses less digits than its factorization.

6686687070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054 (or 8051 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 6686687070 is about 81772.1656188706. The cubic root of 6686687070 is about 1883.9541670730.

The spelling of 6686687070 in words is "six billion, six hundred eighty-six million, six hundred eighty-seven thousand, seventy".