676216221 has 8 divisors (see below), whose sum is σ = 913034880. Its totient is φ = 445104192.

The previous prime is 676216201. The next prime is 676216231. The reversal of 676216221 is 122612676.

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

It is not a de Polignac number, because 676216221 - 2²⁷ = 541998493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676216201) 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, 1426380 + ... + 1426853.

It is an arithmetic number, because the mean of its divisors is an integer number (114129360).

Almost surely, 2^676216221 is an apocalyptic number.

It is an amenable number.

676216221 is a deficient number, since it is larger than the sum of its proper divisors (236818659).

676216221 is a wasteful number, since it uses less digits than its factorization.

676216221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853315.

The product of its digits is 12096, while the sum is 33.

The square root of 676216221 is about 26004.1577637116. The cubic root of 676216221 is about 877.7318574665.

Adding to 676216221 its reverse (122612676), we get a palindrome (798828897).

The spelling of 676216221 in words is "six hundred seventy-six million, two hundred sixteen thousand, two hundred twenty-one".