673801057 has 2 divisors, whose sum is σ = 673801058. Its totient is φ = 673801056.

The previous prime is 673801019. The next prime is 673801061. The reversal of 673801057 is 750108376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671379921 + 2421136 = 25911^2 + 1556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673801057 is a prime.

It is not a weakly prime, because it can be changed into another prime (673801067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336900528 + 336900529.

It is an arithmetic number, because the mean of its divisors is an integer number (336900529).

Almost surely, 2^673801057 is an apocalyptic number.

It is an amenable number.

673801057 is a deficient number, since it is larger than the sum of its proper divisors (1).

673801057 is an equidigital number, since it uses as much as digits as its factorization.

673801057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 673801057 is about 25957.6781896995. The cubic root of 673801057 is about 876.6856461617.

The spelling of 673801057 in words is "six hundred seventy-three million, eight hundred one thousand, fifty-seven".