673741636 has 12 divisors (see below), whose sum is σ = 1186558828. Its totient is φ = 334724832.

The previous prime is 673741633. The next prime is 673741661. The reversal of 673741636 is 636147376.

It can be written as a sum of positive squares in 2 ways, for example, as 375972100 + 297769536 = 19390^2 + 17256^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 673741592 and 673741601.

It is not an unprimeable number, because it can be changed into a prime (673741633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535791 + ... + 537046.

Almost surely, 2^673741636 is an apocalyptic number.

It is an amenable number.

673741636 is a deficient number, since it is larger than the sum of its proper divisors (512817192).

673741636 is a wasteful number, since it uses less digits than its factorization.

673741636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072998 (or 1072996 counting only the distinct ones).

The product of its digits is 381024, while the sum is 43.

The square root of 673741636 is about 25956.5335898305. The cubic root of 673741636 is about 876.6598744255.

The spelling of 673741636 in words is "six hundred seventy-three million, seven hundred forty-one thousand, six hundred thirty-six".