6866705620 has 48 divisors (see below), whose sum is σ = 15356709648. Its totient is φ = 2570147840.

The previous prime is 6866705617. The next prime is 6866705639. The reversal of 6866705620 is 265076686.

It can be written as a sum of positive squares in 8 ways, for example, as 394181316 + 6472524304 = 19854^2 + 80452^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450 + ... + 117190.

It is an arithmetic number, because the mean of its divisors is an integer number (319931451).

Almost surely, 2^6866705620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6866705620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7678354824).

6866705620 is an abundant number, since it is smaller than the sum of its proper divisors (8490004028).

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

6866705620 is a wasteful number, since it uses less digits than its factorization.

6866705620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116940 (or 116938 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 6866705620 is about 82865.5876706368. The cubic root of 6866705620 is about 1900.7112406482.

The spelling of 6866705620 in words is "six billion, eight hundred sixty-six million, seven hundred five thousand, six hundred twenty".