671801682 has 32 divisors (see below), whose sum is σ = 1468537344. Its totient is φ = 203961600.

The previous prime is 671801681. The next prime is 671801693. The reversal of 671801682 is 286108176.

It is a self number, because there is not a number n which added to its sum of digits gives 671801682.

It is not an unprimeable number, because it can be changed into a prime (671801681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103069 + ... + 109392.

It is an arithmetic number, because the mean of its divisors is an integer number (45891792).

Almost surely, 2^671801682 is an apocalyptic number.

671801682 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

671801682 is an abundant number, since it is smaller than the sum of its proper divisors (796735662).

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

671801682 is a wasteful number, since it uses less digits than its factorization.

671801682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212514.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 671801682 is about 25919.1373699049. The cubic root of 671801682 is about 875.8176550678.

The spelling of 671801682 in words is "six hundred seventy-one million, eight hundred one thousand, six hundred eighty-two".