670766 has 4 divisors (see below), whose sum is σ = 1006152. Its totient is φ = 335382.

The previous prime is 670763. The next prime is 670777. The reversal of 670766 is 667076.

670766 = 408² + 409² + ... + 411².

670766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167690 + ... + 167693.

It is an arithmetic number, because the mean of its divisors is an integer number (251538).

2⁶⁷⁰⁷⁶⁶ is an apocalyptic number.

670766 is a deficient number, since it is larger than the sum of its proper divisors (335386).

670766 is a wasteful number, since it uses less digits than its factorization.

670766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335385.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 670766 is about 819.0030524974. The cubic root of 670766 is about 87.5367355953.

The spelling of 670766 in words is "six hundred seventy thousand, seven hundred sixty-six".