670767 has 4 divisors (see below), whose sum is σ = 894360. Its totient is φ = 447176.

The previous prime is 670763. The next prime is 670777. The reversal of 670767 is 767076.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 670767 - 2² = 670763 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

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 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, 111792 + ... + 111797.

It is an arithmetic number, because the mean of its divisors is an integer number (223590).

2⁶⁷⁰⁷⁶⁷ is an apocalyptic number.

670767 is a deficient number, since it is larger than the sum of its proper divisors (223593).

670767 is a wasteful number, since it uses less digits than its factorization.

670767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223592.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 670767 is about 819.0036629955. The cubic root of 670767 is about 87.5367790962.

The spelling of 670767 in words is "six hundred seventy thousand, seven hundred sixty-seven".