673779 has 8 divisors (see below), whose sum is σ = 907200. Its totient is φ = 444776.

The previous prime is 673769. The next prime is 673781. The reversal of 673779 is 977376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673779 - 2⁵ = 673747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2⁶⁷³⁷⁷⁹ is an apocalyptic number.

673779 is a deficient number, since it is larger than the sum of its proper divisors (233421).

673779 is a wasteful number, since it uses less digits than its factorization.

673779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 55566, while the sum is 39.

The square root of 673779 is about 820.8404229812. The cubic root of 673779 is about 87.6676079903.

The spelling of 673779 in words is "six hundred seventy-three thousand, seven hundred seventy-nine".