670724 has 12 divisors (see below), whose sum is σ = 1190364. Its totient is φ = 330624.

The previous prime is 670711. The next prime is 670727. The reversal of 670724 is 427076.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 322624 = 590^2 + 568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670693 and 670702.

It is not an unprimeable number, because it can be changed into a prime (670727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857 + ... + 1440.

It is an arithmetic number, because the mean of its divisors is an integer number (99197).

2⁶⁷⁰⁷²⁴ is an apocalyptic number.

It is an amenable number.

670724 is a deficient number, since it is larger than the sum of its proper divisors (519640).

670724 is a wasteful number, since it uses less digits than its factorization.

670724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 670724 is about 818.9774111659. The cubic root of 670724 is about 87.5349085202.

It can be divided in two parts, 67072 and 4, that added together give a palindrome (67076).

The spelling of 670724 in words is "six hundred seventy thousand, seven hundred twenty-four".