673858 has 4 divisors (see below), whose sum is σ = 1010790. Its totient is φ = 336928.

The previous prime is 673837. The next prime is 673879. The reversal of 673858 is 858376.

673858 is nontrivially palindromic in base 9.

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

It is an interprime number because it is at equal distance from previous prime (673837) and next prime (673879).

It can be written as a sum of positive squares in only one way, i.e., 363609 + 310249 = 603^2 + 557^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168463 + ... + 168466.

2⁶⁷³⁸⁵⁸ is an apocalyptic number.

673858 is a deficient number, since it is larger than the sum of its proper divisors (336932).

673858 is a wasteful number, since it uses less digits than its factorization.

673858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336931.

The product of its digits is 40320, while the sum is 37.

The square root of 673858 is about 820.8885429825. Note that the first 3 decimals coincide. The cubic root of 673858 is about 87.6710341732.

The spelling of 673858 in words is "six hundred seventy-three thousand, eight hundred fifty-eight".