671826448 has 10 divisors (see below), whose sum is σ = 1301663774. Its totient is φ = 335913216.

The previous prime is 671826443. The next prime is 671826457. The reversal of 671826448 is 844628176.

It can be written as a sum of positive squares in only one way, i.e., 437981184 + 233845264 = 20928^2 + 15292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 671826398 and 671826407.

It is not an unprimeable number, because it can be changed into a prime (671826443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20994561 + ... + 20994592.

Almost surely, 2^671826448 is an apocalyptic number.

It is an amenable number.

671826448 is a deficient number, since it is larger than the sum of its proper divisors (629837326).

671826448 is a wasteful number, since it uses less digits than its factorization.

671826448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41989161 (or 41989155 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 671826448 is about 25919.6151205993. The cubic root of 671826448 is about 875.8284172883.

The spelling of 671826448 in words is "six hundred seventy-one million, eight hundred twenty-six thousand, four hundred forty-eight".