673149646 has 48 divisors (see below), whose sum is σ = 1165601664. Its totient is φ = 290414592.

The previous prime is 673149641. The next prime is 673149647. The reversal of 673149646 is 646941376.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 673149596 and 673149605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673149641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1108675 + ... + 1109281.

It is an arithmetic number, because the mean of its divisors is an integer number (24283368).

Almost surely, 2^673149646 is an apocalyptic number.

673149646 is a deficient number, since it is larger than the sum of its proper divisors (492452018).

673149646 is a wasteful number, since it uses less digits than its factorization.

673149646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 832 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 673149646 is about 25945.1275965257. The cubic root of 673149646 is about 876.4030371226.

The spelling of 673149646 in words is "six hundred seventy-three million, one hundred forty-nine thousand, six hundred forty-six".