673641777 has 4 divisors (see below), whose sum is σ = 898189040. Its totient is φ = 449094516.

The previous prime is 673641757. The next prime is 673641781. The reversal of 673641777 is 777146376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 673641777 - 2¹⁰ = 673640753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673641707) 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, 112273627 + ... + 112273632.

It is an arithmetic number, because the mean of its divisors is an integer number (224547260).

Almost surely, 2^673641777 is an apocalyptic number.

It is an amenable number.

673641777 is a deficient number, since it is larger than the sum of its proper divisors (224547263).

673641777 is a wasteful number, since it uses less digits than its factorization.

673641777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224547262.

The product of its digits is 1037232, while the sum is 48.

The square root of 673641777 is about 25954.6099373502. The cubic root of 673641777 is about 876.6165607381.

The spelling of 673641777 in words is "six hundred seventy-three million, six hundred forty-one thousand, seven hundred seventy-seven".