673648427 has 2 divisors, whose sum is σ = 673648428. Its totient is φ = 673648426.

The previous prime is 673648411. The next prime is 673648433. The reversal of 673648427 is 724846376.

673648427 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673648427 - 2⁴ = 673648411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (673648447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336824213 + 336824214.

It is an arithmetic number, because the mean of its divisors is an integer number (336824214).

Almost surely, 2^673648427 is an apocalyptic number.

673648427 is a deficient number, since it is larger than the sum of its proper divisors (1).

673648427 is an equidigital number, since it uses as much as digits as its factorization.

673648427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 47.

The square root of 673648427 is about 25954.7380452972. The cubic root of 673648427 is about 876.6194452984.

The spelling of 673648427 in words is "six hundred seventy-three million, six hundred forty-eight thousand, four hundred twenty-seven".