673577718 has 48 divisors (see below), whose sum is σ = 1485761088. Its totient is φ = 203425200.

The previous prime is 673577717. The next prime is 673577719. The reversal of 673577718 is 817775376.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (673577717) and next prime (673577719).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673577717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238905 + ... + 241707.

It is an arithmetic number, because the mean of its divisors is an integer number (30953356).

Almost surely, 2^673577718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673577718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742880544).

673577718 is an abundant number, since it is smaller than the sum of its proper divisors (812183370).

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

673577718 is a wasteful number, since it uses less digits than its factorization.

673577718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3150 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 51.

The square root of 673577718 is about 25953.3758497811. The cubic root of 673577718 is about 876.5887729918.

The spelling of 673577718 in words is "six hundred seventy-three million, five hundred seventy-seven thousand, seven hundred eighteen".