675266821 has 8 divisors (see below), whose sum is σ = 741712320. Its totient is φ = 611911872.

The previous prime is 675266789. The next prime is 675266861. The reversal of 675266821 is 128662576.

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

It is not a de Polignac number, because 675266821 - 2⁵ = 675266789 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 (675266861) 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 7 ways as a sum of consecutive naturals, for example, 772180 + ... + 773053.

It is an arithmetic number, because the mean of its divisors is an integer number (92714040).

Almost surely, 2^675266821 is an apocalyptic number.

It is an amenable number.

675266821 is a deficient number, since it is larger than the sum of its proper divisors (66445499).

675266821 is a wasteful number, since it uses less digits than its factorization.

675266821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545275.

The product of its digits is 241920, while the sum is 43.

The square root of 675266821 is about 25985.8965787213. The cubic root of 675266821 is about 877.3208898430.

It can be divided in two parts, 67526 and 6821, that added together give a palindrome (74347).

The spelling of 675266821 in words is "six hundred seventy-five million, two hundred sixty-six thousand, eight hundred twenty-one".