675489621 has 4 divisors (see below), whose sum is σ = 900652832. Its totient is φ = 450326412.

The previous prime is 675489589. The next prime is 675489629. The reversal of 675489621 is 126984576.

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 not a de Polignac number, because 675489621 - 2⁵ = 675489589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675489629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112581601 + ... + 112581606.

It is an arithmetic number, because the mean of its divisors is an integer number (225163208).

Almost surely, 2^675489621 is an apocalyptic number.

It is an amenable number.

675489621 is a deficient number, since it is larger than the sum of its proper divisors (225163211).

675489621 is a wasteful number, since it uses less digits than its factorization.

675489621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225163210.

The product of its digits is 725760, while the sum is 48.

The square root of 675489621 is about 25990.1831659571. The cubic root of 675489621 is about 877.4173680520.

The spelling of 675489621 in words is "six hundred seventy-five million, four hundred eighty-nine thousand, six hundred twenty-one".