647670701 has 2 divisors, whose sum is σ = 647670702. Its totient is φ = 647670700.

The previous prime is 647670691. The next prime is 647670721. The reversal of 647670701 is 107076746.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566202025 + 81468676 = 23795^2 + 9026^2 .

It is a cyclic number.

It is not a de Polignac number, because 647670701 - 2⁶ = 647670637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647670721) 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 as a sum of consecutive naturals, namely, 323835350 + 323835351.

It is an arithmetic number, because the mean of its divisors is an integer number (323835351).

Almost surely, 2^647670701 is an apocalyptic number.

It is an amenable number.

647670701 is a deficient number, since it is larger than the sum of its proper divisors (1).

647670701 is an equidigital number, since it uses as much as digits as its factorization.

647670701 is an odious number, because the sum of its binary digits is odd.

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

The square root of 647670701 is about 25449.3752575579. The cubic root of 647670701 is about 865.2031335999.

It can be divided in two parts, 6476 and 70701, that added together give a palindrome (77177).

The spelling of 647670701 in words is "six hundred forty-seven million, six hundred seventy thousand, seven hundred one".