647051723 has 2 divisors, whose sum is σ = 647051724. Its totient is φ = 647051722.

The previous prime is 647051621. The next prime is 647051731. The reversal of 647051723 is 327150746.

647051723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647051723 - 2¹² = 647047627 is a prime.

It is not a weakly prime, because it can be changed into another prime (647051323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323525861 + 323525862.

It is an arithmetic number, because the mean of its divisors is an integer number (323525862).

Almost surely, 2^647051723 is an apocalyptic number.

647051723 is a deficient number, since it is larger than the sum of its proper divisors (1).

647051723 is an equidigital number, since it uses as much as digits as its factorization.

647051723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 647051723 is about 25437.2113841121. The cubic root of 647051723 is about 864.9274212662.

The spelling of 647051723 in words is "six hundred forty-seven million, fifty-one thousand, seven hundred twenty-three".