6619170681 has 24 divisors (see below), whose sum is σ = 9666648264. Its totient is φ = 4364098560.

The previous prime is 6619170673. The next prime is 6619170697. The reversal of 6619170681 is 1860719166.

It can be written as a sum of positive squares in 4 ways, for example, as 2438384400 + 4180786281 = 49380^2 + 64659^2 .

It is not a de Polignac number, because 6619170681 - 2³ = 6619170673 is a prime.

It is a super-2 number, since 2×6619170681² = 87626841008420007522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6619170631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2160891 + ... + 2163951.

It is an arithmetic number, because the mean of its divisors is an integer number (402777011).

Almost surely, 2^6619170681 is an apocalyptic number.

It is an amenable number.

6619170681 is a deficient number, since it is larger than the sum of its proper divisors (3047477583).

6619170681 is a wasteful number, since it uses less digits than its factorization.

6619170681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641 (or 5638 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 6619170681 is about 81358.2858779608. The cubic root of 6619170681 is about 1877.5918579079.

The spelling of 6619170681 in words is "six billion, six hundred nineteen million, one hundred seventy thousand, six hundred eighty-one".