673443620 has 12 divisors (see below), whose sum is σ = 1414231644. Its totient is φ = 269377440.

The previous prime is 673443607. The next prime is 673443643. The reversal of 673443620 is 26344376.

It can be written as a sum of positive squares in 2 ways, for example, as 109286116 + 564157504 = 10454^2 + 23752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16836071 + ... + 16836110.

It is an arithmetic number, because the mean of its divisors is an integer number (117852637).

Almost surely, 2^673443620 is an apocalyptic number.

It is an amenable number.

673443620 is an abundant number, since it is smaller than the sum of its proper divisors (740788024).

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

673443620 is a wasteful number, since it uses less digits than its factorization.

673443620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33672190 (or 33672188 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 35.

The square root of 673443620 is about 25950.7922807763. The cubic root of 673443620 is about 876.5305977684.

Adding to 673443620 its reverse (26344376), we get a palindrome (699787996).

The spelling of 673443620 in words is "six hundred seventy-three million, four hundred forty-three thousand, six hundred twenty".