673866057 has 16 divisors (see below), whose sum is σ = 905231808. Its totient is φ = 445885440.

The previous prime is 673866049. The next prime is 673866091. The reversal of 673866057 is 750668376.

It is not a de Polignac number, because 673866057 - 2³ = 673866049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673865997 and 673866015.

It is not an unprimeable number, because it can be changed into a prime (673866007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245382 + ... + 248112.

It is an arithmetic number, because the mean of its divisors is an integer number (56576988).

Almost surely, 2^673866057 is an apocalyptic number.

It is an amenable number.

673866057 is a deficient number, since it is larger than the sum of its proper divisors (231365751).

673866057 is a wasteful number, since it uses less digits than its factorization.

673866057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 673866057 is about 25958.9301975255. The cubic root of 673866057 is about 876.7138358546.

The spelling of 673866057 in words is "six hundred seventy-three million, eight hundred sixty-six thousand, fifty-seven".