6466463261 has 2 divisors, whose sum is σ = 6466463262. Its totient is φ = 6466463260.

The previous prime is 6466463257. The next prime is 6466463303. The reversal of 6466463261 is 1623646646.

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., 5386092100 + 1080371161 = 73390^2 + 32869^2 .

It is a cyclic number.

It is not a de Polignac number, because 6466463261 - 2² = 6466463257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6466463231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233231630 + 3233231631.

It is an arithmetic number, because the mean of its divisors is an integer number (3233231631).

Almost surely, 2^6466463261 is an apocalyptic number.

It is an amenable number.

6466463261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6466463261 is an equidigital number, since it uses as much as digits as its factorization.

6466463261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 44.

The square root of 6466463261 is about 80414.3224867312. The cubic root of 6466463261 is about 1863.0403949749.

The spelling of 6466463261 in words is "six billion, four hundred sixty-six million, four hundred sixty-three thousand, two hundred sixty-one".