676121021 has 8 divisors (see below), whose sum is σ = 679736640. Its totient is φ = 672515712.

The previous prime is 676120987. The next prime is 676121027. The reversal of 676121021 is 120121676.

676121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 676121021 - 2¹⁸ = 675858877 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 (676121027) 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, 152786 + ... + 157148.

It is an arithmetic number, because the mean of its divisors is an integer number (84967080).

Almost surely, 2^676121021 is an apocalyptic number.

It is an amenable number.

676121021 is a deficient number, since it is larger than the sum of its proper divisors (3615619).

676121021 is a wasteful number, since it uses less digits than its factorization.

676121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 676121021 is about 26002.3272227699. The cubic root of 676121021 is about 877.6906655164.

Adding to 676121021 its reverse (120121676), we get a palindrome (796242697).

The spelling of 676121021 in words is "six hundred seventy-six million, one hundred twenty-one thousand, twenty-one".