673488779 has 24 divisors (see below), whose sum is σ = 745645680. Its totient is φ = 608259456.

The previous prime is 673488743. The next prime is 673488787. The reversal of 673488779 is 977884376.

It is not a de Polignac number, because 673488779 - 2¹⁶ = 673423243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673488799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4131752 + ... + 4131914.

It is an arithmetic number, because the mean of its divisors is an integer number (31068570).

Almost surely, 2^673488779 is an apocalyptic number.

673488779 is a deficient number, since it is larger than the sum of its proper divisors (72156901).

673488779 is an equidigital number, since it uses as much as digits as its factorization.

673488779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 209 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 59.

The square root of 673488779 is about 25951.6623552327. The cubic root of 673488779 is about 876.5501897873.

The spelling of 673488779 in words is "six hundred seventy-three million, four hundred eighty-eight thousand, seven hundred seventy-nine".