671668104 has 64 divisors (see below), whose sum is σ = 1740916800. Its totient is φ = 215771904.

The previous prime is 671668091. The next prime is 671668171. The reversal of 671668104 is 401866176.

It is a happy number.

It is a super-2 number, since 2×671668104² = 902276083861909632, which contains 22 as substring.

It is an unprimeable number.

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, 91482 + ... + 98550.

It is an arithmetic number, because the mean of its divisors is an integer number (27201825).

Almost surely, 2^671668104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671668104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870458400).

671668104 is an abundant number, since it is smaller than the sum of its proper divisors (1069248696).

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

671668104 is a wasteful number, since it uses less digits than its factorization.

671668104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222 (or 7218 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 671668104 is about 25916.5604199323. The cubic root of 671668104 is about 875.7596033497.

The spelling of 671668104 in words is "six hundred seventy-one million, six hundred sixty-eight thousand, one hundred four".