673946158 has 4 divisors (see below), whose sum is σ = 1010919240. Its totient is φ = 336973078.

The previous prime is 673946153. The next prime is 673946159. The reversal of 673946158 is 851649376.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673946153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168486538 + ... + 168486541.

It is an arithmetic number, because the mean of its divisors is an integer number (252729810).

Almost surely, 2^673946158 is an apocalyptic number.

673946158 is a deficient number, since it is larger than the sum of its proper divisors (336973082).

673946158 is a wasteful number, since it uses less digits than its factorization.

673946158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336973081.

The product of its digits is 1088640, while the sum is 49.

The square root of 673946158 is about 25960.4729926094. The cubic root of 673946158 is about 876.7485721705.

The spelling of 673946158 in words is "six hundred seventy-three million, nine hundred forty-six thousand, one hundred fifty-eight".