671898241 has 25 divisors (see below), whose sum is σ = 819463361. Its totient is φ = 550873092.

The previous prime is 671898233. The next prime is 671898251. The reversal of 671898241 is 142898176.

The square root of 671898241 is 25921.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It is not a de Polignac number, because 671898241 - 2³ = 671898233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671898191 and 671898200.

It is not an unprimeable number, because it can be changed into a prime (671898211) by changing a digit.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 29212956 + ... + 29212978.

Almost surely, 2^671898241 is an apocalyptic number.

671898241 is the 25921-st square number.

671898241 is the 12961-st centered octagonal number.

It is an amenable number.

671898241 is a deficient number, since it is larger than the sum of its proper divisors (147565120).

671898241 is an frugal number, since it uses more digits than its factorization.

671898241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 30 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The cubic root of 671898241 is about 875.8596138918.

The spelling of 671898241 in words is "six hundred seventy-one million, eight hundred ninety-eight thousand, two hundred forty-one".