6406463477 has 2 divisors, whose sum is σ = 6406463478. Its totient is φ = 6406463476.

The previous prime is 6406463411. The next prime is 6406463507. The reversal of 6406463477 is 7743646046.

It is a happy number.

6406463477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4973916676 + 1432546801 = 70526^2 + 37849^2 .

It is a cyclic number.

It is not a de Polignac number, because 6406463477 - 2²⁰ = 6405414901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6406463177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203231738 + 3203231739.

It is an arithmetic number, because the mean of its divisors is an integer number (3203231739).

Almost surely, 2^6406463477 is an apocalyptic number.

It is an amenable number.

6406463477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6406463477 is an equidigital number, since it uses as much as digits as its factorization.

6406463477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 47.

The square root of 6406463477 is about 80040.3865370477. The cubic root of 6406463477 is about 1857.2603398801.

The spelling of 6406463477 in words is "six billion, four hundred six million, four hundred sixty-three thousand, four hundred seventy-seven".