673824551 has 2 divisors, whose sum is σ = 673824552. Its totient is φ = 673824550.

The previous prime is 673824509. The next prime is 673824553. The reversal of 673824551 is 155428376.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673824551 is a prime.

Together with 673824553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 673824499 and 673824508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673824553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336912275 + 336912276.

It is an arithmetic number, because the mean of its divisors is an integer number (336912276).

Almost surely, 2^673824551 is an apocalyptic number.

673824551 is a deficient number, since it is larger than the sum of its proper divisors (1).

673824551 is an equidigital number, since it uses as much as digits as its factorization.

673824551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 673824551 is about 25958.1307300815. The cubic root of 673824551 is about 876.6958354270.

The spelling of 673824551 in words is "six hundred seventy-three million, eight hundred twenty-four thousand, five hundred fifty-one".