676225821 has 4 divisors (see below), whose sum is σ = 901634432. Its totient is φ = 450817212.

The previous prime is 676225819. The next prime is 676225831. The reversal of 676225821 is 128522676.

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 676225821 - 2¹ = 676225819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 676225821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676225831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112704301 + ... + 112704306.

It is an arithmetic number, because the mean of its divisors is an integer number (225408608).

Almost surely, 2^676225821 is an apocalyptic number.

It is an amenable number.

676225821 is a deficient number, since it is larger than the sum of its proper divisors (225408611).

676225821 is a wasteful number, since it uses less digits than its factorization.

676225821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225408610.

The product of its digits is 80640, while the sum is 39.

The square root of 676225821 is about 26004.3423489232. The cubic root of 676225821 is about 877.7360110620.

The spelling of 676225821 in words is "six hundred seventy-six million, two hundred twenty-five thousand, eight hundred twenty-one".