670896 has 40 divisors (see below), whose sum is σ = 1926960. Its totient is φ = 223488.

The previous prime is 670877. The next prime is 670897. The reversal of 670896 is 698076.

670896 = 129² + 130² + ... + 160².

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 670896.

It is not an unprimeable number, because it can be changed into a prime (670897) by changing a digit.

670896 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, 345 + ... + 1208.

It is an arithmetic number, because the mean of its divisors is an integer number (48174).

2⁶⁷⁰⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

670896 is an abundant number, since it is smaller than the sum of its proper divisors (1256064).

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

670896 is a wasteful number, since it uses less digits than its factorization.

670896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 670896 is about 819.0824134359. The cubic root of 670896 is about 87.5423903446.

The spelling of 670896 in words is "six hundred seventy thousand, eight hundred ninety-six".