649071323 has 2 divisors, whose sum is σ = 649071324. Its totient is φ = 649071322.

The previous prime is 649071317. The next prime is 649071343. The reversal of 649071323 is 323170946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649071323 - 2⁶ = 649071259 is a prime.

It is not a weakly prime, because it can be changed into another prime (649071343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324535661 + 324535662.

It is an arithmetic number, because the mean of its divisors is an integer number (324535662).

Almost surely, 2^649071323 is an apocalyptic number.

649071323 is a deficient number, since it is larger than the sum of its proper divisors (1).

649071323 is an equidigital number, since it uses as much as digits as its factorization.

649071323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 649071323 is about 25476.8782035790. The cubic root of 649071323 is about 865.8263670045.

The spelling of 649071323 in words is "six hundred forty-nine million, seventy-one thousand, three hundred twenty-three".