647304379 has 2 divisors, whose sum is σ = 647304380. Its totient is φ = 647304378.

The previous prime is 647304337. The next prime is 647304419. The reversal of 647304379 is 973403746.

647304379 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 647304379 - 2²⁹ = 110433467 is a prime.

It is not a weakly prime, because it can be changed into another prime (647304319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323652189 + 323652190.

It is an arithmetic number, because the mean of its divisors is an integer number (323652190).

Almost surely, 2^647304379 is an apocalyptic number.

647304379 is a deficient number, since it is larger than the sum of its proper divisors (1).

647304379 is an equidigital number, since it uses as much as digits as its factorization.

647304379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 647304379 is about 25442.1771670586. The cubic root of 647304379 is about 865.0399834503.

The spelling of 647304379 in words is "six hundred forty-seven million, three hundred four thousand, three hundred seventy-nine".