670461727 has 4 divisors (see below), whose sum is σ = 722035720. Its totient is φ = 618887736.

The previous prime is 670461689. The next prime is 670461731. The reversal of 670461727 is 727164076.

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 670461727 - 2²³ = 662073119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670461727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670465727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25786977 + ... + 25787002.

It is an arithmetic number, because the mean of its divisors is an integer number (180508930).

Almost surely, 2^670461727 is an apocalyptic number.

670461727 is a deficient number, since it is larger than the sum of its proper divisors (51573993).

670461727 is a wasteful number, since it uses less digits than its factorization.

670461727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51573992.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 670461727 is about 25893.2757101144. The cubic root of 670461727 is about 875.2349744992.

The spelling of 670461727 in words is "six hundred seventy million, four hundred sixty-one thousand, seven hundred twenty-seven".