670772 has 18 divisors (see below), whose sum is σ = 1230978. Its totient is φ = 319792.

The previous prime is 670763. The next prime is 670777. The reversal of 670772 is 277076.

It can be written as a sum of positive squares in only one way, i.e., 414736 + 256036 = 644^2 + 506^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670777) by changing a digit.

670772 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 5 ways as a sum of consecutive naturals, for example, 1958 + ... + 2274.

2⁶⁷⁰⁷⁷² is an apocalyptic number.

It is an amenable number.

670772 is a deficient number, since it is larger than the sum of its proper divisors (560206).

670772 is a wasteful number, since it uses less digits than its factorization.

670772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 670772 is about 819.0067154792. The cubic root of 670772 is about 87.5369965999.

The spelling of 670772 in words is "six hundred seventy thousand, seven hundred seventy-two".