673655 has 4 divisors (see below), whose sum is σ = 808392. Its totient is φ = 538920.

The previous prime is 673649. The next prime is 673667. The reversal of 673655 is 556376.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 673655 - 2⁴ = 673639 is a prime.

It is a super-2 number, since 2×673655² = 907622118050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673655.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67361 + ... + 67370.

It is an arithmetic number, because the mean of its divisors is an integer number (202098).

2⁶⁷³⁶⁵⁵ is an apocalyptic number.

673655 is a deficient number, since it is larger than the sum of its proper divisors (134737).

673655 is a wasteful number, since it uses less digits than its factorization.

673655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134736.

The product of its digits is 18900, while the sum is 32.

The square root of 673655 is about 820.7648871632. The cubic root of 673655 is about 87.6622296440.

The spelling of 673655 in words is "six hundred seventy-three thousand, six hundred fifty-five".