670558 has 16 divisors (see below), whose sum is σ = 1160064. Its totient is φ = 284760.

The previous prime is 670543. The next prime is 670559. The reversal of 670558 is 855076.

670558 is nontrivially palindromic in base 15.

It is a super-3 number, since 3×670558³ = 904545253846143336, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670559) by changing a digit.

670558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2841 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (72504).

2⁶⁷⁰⁵⁵⁸ is an apocalyptic number.

670558 is a deficient number, since it is larger than the sum of its proper divisors (489506).

670558 is a wasteful number, since it uses less digits than its factorization.

670558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 670558 is about 818.8760589979. The cubic root of 670558 is about 87.5276864767.

The spelling of 670558 in words is "six hundred seventy thousand, five hundred fifty-eight".