673684249 has 16 divisors (see below), whose sum is σ = 776476800. Its totient is φ = 572552064.

The previous prime is 673684217. The next prime is 673684261. The reversal of 673684249 is 942486376.

It is not a de Polignac number, because 673684249 - 2⁵ = 673684217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673684289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521997 + ... + 523285.

It is an arithmetic number, because the mean of its divisors is an integer number (48529800).

Almost surely, 2^673684249 is an apocalyptic number.

It is an amenable number.

673684249 is a deficient number, since it is larger than the sum of its proper divisors (102792551).

673684249 is a wasteful number, since it uses less digits than its factorization.

673684249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872.

The product of its digits is 1741824, while the sum is 49.

The square root of 673684249 is about 25955.4281220711. The cubic root of 673684249 is about 876.6349834258.

It can be divided in two parts, 67368 and 4249, that added together give a palindrome (71617).

The spelling of 673684249 in words is "six hundred seventy-three million, six hundred eighty-four thousand, two hundred forty-nine".