670917 has 8 divisors (see below), whose sum is σ = 963424. Its totient is φ = 412848.

The previous prime is 670903. The next prime is 670919. The reversal of 670917 is 719076.

670917 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 670917 - 2⁶ = 670853 is a prime.

It is a Duffinian number.

670917 is strictly pandigital in base 7.

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 670917.

It is not an unprimeable number, because it can be changed into a prime (670919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8563 + ... + 8640.

It is an arithmetic number, because the mean of its divisors is an integer number (120428).

2⁶⁷⁰⁹¹⁷ is an apocalyptic number.

It is an amenable number.

670917 is a deficient number, since it is larger than the sum of its proper divisors (292507).

670917 is a wasteful number, since it uses less digits than its factorization.

670917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17219.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 670917 is about 819.0952325585. The cubic root of 670917 is about 87.5433037355.

The spelling of 670917 in words is "six hundred seventy thousand, nine hundred seventeen".