673421772 has 24 divisors (see below), whose sum is σ = 1575170800. Its totient is φ = 223923456.

The previous prime is 673421767. The next prime is 673421783. The reversal of 673421772 is 277124376.

It is a self number, because there is not a number n which added to its sum of digits gives 673421772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63697 + ... + 73512.

Almost surely, 2^673421772 is an apocalyptic number.

It is an amenable number.

673421772 is an abundant number, since it is smaller than the sum of its proper divisors (901749028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673421772 is a wasteful number, since it uses less digits than its factorization.

673421772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137625 (or 137623 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The square root of 673421772 is about 25950.3713268231. The cubic root of 673421772 is about 876.5211188023.

The spelling of 673421772 in words is "six hundred seventy-three million, four hundred twenty-one thousand, seven hundred seventy-two".