6831620772 has 48 divisors (see below), whose sum is σ = 16981628160. Its totient is φ = 2131355808.

The previous prime is 6831620749. The next prime is 6831620801. The reversal of 6831620772 is 2770261386.

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, 161578 + ... + 199425.

It is an arithmetic number, because the mean of its divisors is an integer number (353783920).

Almost surely, 2^6831620772 is an apocalyptic number.

It is an amenable number.

6831620772 is an abundant number, since it is smaller than the sum of its proper divisors (10150007388).

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

6831620772 is a wasteful number, since it uses less digits than its factorization.

6831620772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361112 (or 361110 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 6831620772 is about 82653.6192311020. The cubic root of 6831620772 is about 1897.4685374791.

The spelling of 6831620772 in words is "six billion, eight hundred thirty-one million, six hundred twenty thousand, seven hundred seventy-two".