670578 has 16 divisors (see below), whose sum is σ = 1360416. Its totient is φ = 220320.

The previous prime is 670577. The next prime is 670583. The reversal of 670578 is 875076.

It is not an unprimeable number, because it can be changed into a prime (670577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (85026).

2⁶⁷⁰⁵⁷⁸ is an apocalyptic number.

670578 is an abundant number, since it is smaller than the sum of its proper divisors (689838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670578 is a wasteful number, since it uses less digits than its factorization.

670578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 670578 is about 818.8882707671. Note that the first 3 decimals coincide. The cubic root of 670578 is about 87.5285566656.

The spelling of 670578 in words is "six hundred seventy thousand, five hundred seventy-eight".