675581447 has 4 divisors (see below), whose sum is σ = 687032040. Its totient is φ = 664130856.

The previous prime is 675581443. The next prime is 675581509. The reversal of 675581447 is 744185576.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 675581447 - 2² = 675581443 is a prime.

It is a super-2 number, since 2×675581447² = 912820583061227618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675581443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5725208 + ... + 5725325.

It is an arithmetic number, because the mean of its divisors is an integer number (171758010).

Almost surely, 2^675581447 is an apocalyptic number.

675581447 is a deficient number, since it is larger than the sum of its proper divisors (11450593).

675581447 is a wasteful number, since it uses less digits than its factorization.

675581447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11450592.

The product of its digits is 940800, while the sum is 47.

The square root of 675581447 is about 25991.9496575382. The cubic root of 675581447 is about 877.4571249306.

The spelling of 675581447 in words is "six hundred seventy-five million, five hundred eighty-one thousand, four hundred forty-seven".