670706741 has 4 divisors (see below), whose sum is σ = 687065484. Its totient is φ = 654348000.

The previous prime is 670706719. The next prime is 670706747. The reversal of 670706741 is 147607076.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 104980516 + 565726225 = 10246^2 + 23785^2 .

It is a cyclic number.

It is not a de Polignac number, because 670706741 - 2¹⁴ = 670690357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670706695 and 670706704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670706747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8179310 + ... + 8179391.

It is an arithmetic number, because the mean of its divisors is an integer number (171766371).

Almost surely, 2^670706741 is an apocalyptic number.

It is an amenable number.

670706741 is a deficient number, since it is larger than the sum of its proper divisors (16358743).

670706741 is a wasteful number, since it uses less digits than its factorization.

670706741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16358742.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 670706741 is about 25898.0065062931. The cubic root of 670706741 is about 875.3415770073.

The spelling of 670706741 in words is "six hundred seventy million, seven hundred six thousand, seven hundred forty-one".