676351421 has 4 divisors (see below), whose sum is σ = 676419744. Its totient is φ = 676283100.

The previous prime is 676351411. The next prime is 676351433. The reversal of 676351421 is 124153676.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 676351421 - 2¹⁸ = 676089277 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 (676351411) 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, 16145 + ... + 40166.

It is an arithmetic number, because the mean of its divisors is an integer number (169104936).

Almost surely, 2^676351421 is an apocalyptic number.

It is an amenable number.

676351421 is a deficient number, since it is larger than the sum of its proper divisors (68323).

676351421 is a wasteful number, since it uses less digits than its factorization.

676351421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68322.

The product of its digits is 30240, while the sum is 35.

The square root of 676351421 is about 26006.7572180770. The cubic root of 676351421 is about 877.7903503152.

The spelling of 676351421 in words is "six hundred seventy-six million, three hundred fifty-one thousand, four hundred twenty-one".