6413447477 has 2 divisors, whose sum is σ = 6413447478. Its totient is φ = 6413447476.

The previous prime is 6413447449. The next prime is 6413447497. The reversal of 6413447477 is 7747443146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5998347601 + 415099876 = 77449^2 + 20374^2 .

It is a cyclic number.

It is not a de Polignac number, because 6413447477 - 2⁶ = 6413447413 is a prime.

It is a super-2 number, since 2×6413447477² = 82264617080475331058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6413447497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3206723738 + 3206723739.

It is an arithmetic number, because the mean of its divisors is an integer number (3206723739).

Almost surely, 2^6413447477 is an apocalyptic number.

It is an amenable number.

6413447477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6413447477 is an equidigital number, since it uses as much as digits as its factorization.

6413447477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1580544, while the sum is 47.

The square root of 6413447477 is about 80084.0026284900. The cubic root of 6413447477 is about 1857.9349916404.

The spelling of 6413447477 in words is "six billion, four hundred thirteen million, four hundred forty-seven thousand, four hundred seventy-seven".