6478905967 has 2 divisors, whose sum is σ = 6478905968. Its totient is φ = 6478905966.

The previous prime is 6478905947. The next prime is 6478905997. The reversal of 6478905967 is 7695098746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6478905967 - 2¹⁵ = 6478873199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6478905947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239452983 + 3239452984.

It is an arithmetic number, because the mean of its divisors is an integer number (3239452984).

Almost surely, 2^6478905967 is an apocalyptic number.

6478905967 is a deficient number, since it is larger than the sum of its proper divisors (1).

6478905967 is an equidigital number, since it uses as much as digits as its factorization.

6478905967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The square root of 6478905967 is about 80491.6515360444. The cubic root of 6478905967 is about 1864.2345774542.

The spelling of 6478905967 in words is "six billion, four hundred seventy-eight million, nine hundred five thousand, nine hundred sixty-seven".