675676821 has 8 divisors (see below), whose sum is σ = 901031040. Its totient is φ = 450386912.

The previous prime is 675676817. The next prime is 675676853. The reversal of 675676821 is 128676576.

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

It is a cyclic number.

It is not a de Polignac number, because 675676821 - 2² = 675676817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675676811) 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, 20020 + ... + 41858.

It is an arithmetic number, because the mean of its divisors is an integer number (112628880).

Almost surely, 2^675676821 is an apocalyptic number.

It is an amenable number.

675676821 is a deficient number, since it is larger than the sum of its proper divisors (225354219).

675676821 is a wasteful number, since it uses less digits than its factorization.

675676821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32155.

The product of its digits is 846720, while the sum is 48.

The square root of 675676821 is about 25993.7842762457. The cubic root of 675676821 is about 877.4984141334.

The spelling of 675676821 in words is "six hundred seventy-five million, six hundred seventy-six thousand, eight hundred twenty-one".