671973441 has 4 divisors (see below), whose sum is σ = 895964592. Its totient is φ = 447982292.

The previous prime is 671973403. The next prime is 671973457. The reversal of 671973441 is 144379176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671973441 - 2⁹ = 671972929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671973393 and 671973402.

It is not an unprimeable number, because it can be changed into a prime (671973041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111995571 + ... + 111995576.

It is an arithmetic number, because the mean of its divisors is an integer number (223991148).

Almost surely, 2^671973441 is an apocalyptic number.

It is an amenable number.

671973441 is a deficient number, since it is larger than the sum of its proper divisors (223991151).

671973441 is a wasteful number, since it uses less digits than its factorization.

671973441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223991150.

The product of its digits is 127008, while the sum is 42.

The square root of 671973441 is about 25922.4505207359. The cubic root of 671973441 is about 875.8922885747.

The spelling of 671973441 in words is "six hundred seventy-one million, nine hundred seventy-three thousand, four hundred forty-one".