676353421 has 4 divisors (see below), whose sum is σ = 687441244. Its totient is φ = 665265600.

The previous prime is 676353413. The next prime is 676353463. The reversal of 676353421 is 124353676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6320196 + 670033225 = 2514^2 + 25885^2 .

It is a cyclic number.

It is not a de Polignac number, because 676353421 - 2³ = 676353413 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 (676353401) 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, 5543820 + ... + 5543941.

It is an arithmetic number, because the mean of its divisors is an integer number (171860311).

Almost surely, 2^676353421 is an apocalyptic number.

676353421 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

676353421 is a deficient number, since it is larger than the sum of its proper divisors (11087823).

676353421 is a wasteful number, since it uses less digits than its factorization.

676353421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11087822.

The product of its digits is 90720, while the sum is 37.

The square root of 676353421 is about 26006.7956695937. The cubic root of 676353421 is about 877.7912155355.

The spelling of 676353421 in words is "six hundred seventy-six million, three hundred fifty-three thousand, four hundred twenty-one".