6471642477 has 4 divisors (see below), whose sum is σ = 8628856640. Its totient is φ = 4314428316.

The previous prime is 6471642461. The next prime is 6471642479. The reversal of 6471642477 is 7742461746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6471642477 - 2⁴ = 6471642461 is a prime.

It is a super-2 number, since 2×6471642477² = 83764312700221391058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6471642479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078607077 + ... + 1078607082.

It is an arithmetic number, because the mean of its divisors is an integer number (2157214160).

Almost surely, 2^6471642477 is an apocalyptic number.

It is an amenable number.

6471642477 is a deficient number, since it is larger than the sum of its proper divisors (2157214163).

6471642477 is a wasteful number, since it uses less digits than its factorization.

6471642477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157214162.

The product of its digits is 1580544, while the sum is 48.

The square root of 6471642477 is about 80446.5193591370. The cubic root of 6471642477 is about 1863.5376535886.

The spelling of 6471642477 in words is "six billion, four hundred seventy-one million, six hundred forty-two thousand, four hundred seventy-seven".