8147477620 has 12 divisors (see below), whose sum is σ = 17109703044. Its totient is φ = 3258991040.

The previous prime is 8147477617. The next prime is 8147477621. The reversal of 8147477620 is 267747418.

It can be written as a sum of positive squares in 2 ways, for example, as 1789966864 + 6357510756 = 42308^2 + 79734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147477621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203686921 + ... + 203686960.

It is an arithmetic number, because the mean of its divisors is an integer number (1425808587).

Almost surely, 2^8147477620 is an apocalyptic number.

It is an amenable number.

8147477620 is an abundant number, since it is smaller than the sum of its proper divisors (8962225424).

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

8147477620 is a wasteful number, since it uses less digits than its factorization.

8147477620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407373890 (or 407373888 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 46.

The square root of 8147477620 is about 90263.3791745024. The cubic root of 8147477620 is about 2012.2150461097.

The spelling of 8147477620 in words is "eight billion, one hundred forty-seven million, four hundred seventy-seven thousand, six hundred twenty".