6464253277 has 2 divisors, whose sum is σ = 6464253278. Its totient is φ = 6464253276.

The previous prime is 6464253217. The next prime is 6464253307. The reversal of 6464253277 is 7723524646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6120558756 + 343694521 = 78234^2 + 18539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6464253277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6464253217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232126638 + 3232126639.

It is an arithmetic number, because the mean of its divisors is an integer number (3232126639).

Almost surely, 2^6464253277 is an apocalyptic number.

It is an amenable number.

6464253277 is a deficient number, since it is larger than the sum of its proper divisors (1).

6464253277 is an equidigital number, since it uses as much as digits as its factorization.

6464253277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 46.

The square root of 6464253277 is about 80400.5800787532. The cubic root of 6464253277 is about 1862.8281327006.

The spelling of 6464253277 in words is "six billion, four hundred sixty-four million, two hundred fifty-three thousand, two hundred seventy-seven".