6477343257 has 32 divisors (see below), whose sum is σ = 11334251520. Its totient is φ = 3187753920.

The previous prime is 6477343253. The next prime is 6477343259. The reversal of 6477343257 is 7523437746.

It is a happy number.

It is not a de Polignac number, because 6477343257 - 2² = 6477343253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6477343253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733518 + ... + 742295.

It is an arithmetic number, because the mean of its divisors is an integer number (354195360).

Almost surely, 2^6477343257 is an apocalyptic number.

It is an amenable number.

6477343257 is a deficient number, since it is larger than the sum of its proper divisors (4856908263).

6477343257 is a wasteful number, since it uses less digits than its factorization.

6477343257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475853.

The product of its digits is 2963520, while the sum is 48.

The square root of 6477343257 is about 80481.9436706147. The cubic root of 6477343257 is about 1864.0846811451.

The spelling of 6477343257 in words is "six billion, four hundred seventy-seven million, three hundred forty-three thousand, two hundred fifty-seven".