670719 has 24 divisors (see below), whose sum is σ = 1102720. Its totient is φ = 354240.

The previous prime is 670711. The next prime is 670727. The reversal of 670719 is 917076.

670719 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (670711) and next prime (670727).

It is not a de Polignac number, because 670719 - 2³ = 670711 is a prime.

It is a super-2 number, since 2×670719² = 899727953922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

670719 is strictly pandigital in base 7.

670719 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16339 + ... + 16379.

2⁶⁷⁰⁷¹⁹ is an apocalyptic number.

670719 is a deficient number, since it is larger than the sum of its proper divisors (432001).

670719 is a wasteful number, since it uses less digits than its factorization.

670719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 70 counting only the distinct ones).

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

The square root of 670719 is about 818.9743585730. The cubic root of 670719 is about 87.5346910062.

The spelling of 670719 in words is "six hundred seventy thousand, seven hundred nineteen".