6171671620 has 12 divisors (see below), whose sum is σ = 12960510444. Its totient is φ = 2468668640.

The previous prime is 6171671603. The next prime is 6171671633. The reversal of 6171671620 is 261761716.

It can be written as a sum of positive squares in 2 ways, for example, as 1358364736 + 4813306884 = 36856^2 + 69378^2 .

It is a super-2 number, since 2×6171671620² = 76179061170226848800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6171671620.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154291771 + ... + 154291810.

It is an arithmetic number, because the mean of its divisors is an integer number (1080042537).

Almost surely, 2^6171671620 is an apocalyptic number.

It is an amenable number.

6171671620 is an abundant number, since it is smaller than the sum of its proper divisors (6788838824).

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

6171671620 is a wasteful number, since it uses less digits than its factorization.

6171671620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308583590 (or 308583588 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 6171671620 is about 78559.9873981660. The cubic root of 6171671620 is about 1834.2883316116.

It can be divided in two parts, 61716716 and 20, that added together give a square (61716736 = 7856²).

The spelling of 6171671620 in words is "six billion, one hundred seventy-one million, six hundred seventy-one thousand, six hundred twenty".