671734756 has 24 divisors (see below), whose sum is σ = 1465603776. Its totient is φ = 261714720.

The previous prime is 671734733. The next prime is 671734771. The reversal of 671734756 is 657437176.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090171 + ... + 1090786.

It is an arithmetic number, because the mean of its divisors is an integer number (61066824).

Almost surely, 2^671734756 is an apocalyptic number.

It is an amenable number.

671734756 is an abundant number, since it is smaller than the sum of its proper divisors (793869020).

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

671734756 is a wasteful number, since it uses less digits than its factorization.

671734756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180979 (or 2180977 counting only the distinct ones).

The product of its digits is 740880, while the sum is 46.

The square root of 671734756 is about 25917.8462839797. The cubic root of 671734756 is about 875.7885706319.

The spelling of 671734756 in words is "six hundred seventy-one million, seven hundred thirty-four thousand, seven hundred fifty-six".