676683421 has 4 divisors (see below), whose sum is σ = 678040000. Its totient is φ = 675326844.

The previous prime is 676683379. The next prime is 676683439. The reversal of 676683421 is 124386676.

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 a cyclic number.

It is not a de Polignac number, because 676683421 - 2¹³ = 676675229 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 (676683481) 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, 677541 + ... + 678538.

It is an arithmetic number, because the mean of its divisors is an integer number (169510000).

Almost surely, 2^676683421 is an apocalyptic number.

It is an amenable number.

676683421 is a deficient number, since it is larger than the sum of its proper divisors (1356579).

676683421 is a wasteful number, since it uses less digits than its factorization.

676683421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356578.

The product of its digits is 290304, while the sum is 43.

The square root of 676683421 is about 26013.1393914691. The cubic root of 676683421 is about 877.9339535349.

The spelling of 676683421 in words is "six hundred seventy-six million, six hundred eighty-three thousand, four hundred twenty-one".