670642 has 8 divisors (see below), whose sum is σ = 1149696. Its totient is φ = 287412.

The previous prime is 670639. The next prime is 670669. The reversal of 670642 is 246076.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23938 + ... + 23965.

It is an arithmetic number, because the mean of its divisors is an integer number (143712).

2⁶⁷⁰⁶⁴² is an apocalyptic number.

670642 is a deficient number, since it is larger than the sum of its proper divisors (479054).

670642 is a wasteful number, since it uses less digits than its factorization.

670642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47912.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 670642 is about 818.9273472049. The cubic root of 670642 is about 87.5313411537.

The spelling of 670642 in words is "six hundred seventy thousand, six hundred forty-two".