673287645 has 32 divisors (see below), whose sum is σ = 1101312000. Its totient is φ = 351134784.

The previous prime is 673287611. The next prime is 673287647. The reversal of 673287645 is 546782376.

It is not a de Polignac number, because 673287645 - 2¹⁵ = 673254877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673287594 and 673287603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673287647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174204 + ... + 178026.

It is an arithmetic number, because the mean of its divisors is an integer number (34416000).

Almost surely, 2^673287645 is an apocalyptic number.

It is an amenable number.

673287645 is a deficient number, since it is larger than the sum of its proper divisors (428024355).

673287645 is a wasteful number, since it uses less digits than its factorization.

673287645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089.

The product of its digits is 1693440, while the sum is 48.

The square root of 673287645 is about 25947.7868998495. The cubic root of 673287645 is about 876.4629220134.

The spelling of 673287645 in words is "six hundred seventy-three million, two hundred eighty-seven thousand, six hundred forty-five".