671452445 has 8 divisors (see below), whose sum is σ = 807754680. Its totient is φ = 535820800.

The previous prime is 671452423. The next prime is 671452447. The reversal of 671452445 is 544254176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 208600249 + 462852196 = 14443^2 + 21514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671452445 - 2¹⁴ = 671436061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671452399 and 671452408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671452447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165440 + ... + 169449.

It is an arithmetic number, because the mean of its divisors is an integer number (100969335).

Almost surely, 2^671452445 is an apocalyptic number.

It is an amenable number.

671452445 is a deficient number, since it is larger than the sum of its proper divisors (136302235).

671452445 is a wasteful number, since it uses less digits than its factorization.

671452445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335295.

The product of its digits is 134400, while the sum is 38.

The square root of 671452445 is about 25912.3994450533. The cubic root of 671452445 is about 875.6658637699.

The spelling of 671452445 in words is "six hundred seventy-one million, four hundred fifty-two thousand, four hundred forty-five".