6456687047 has 4 divisors (see below), whose sum is σ = 6456849936. Its totient is φ = 6456524160.

The previous prime is 6456687031. The next prime is 6456687071. The reversal of 6456687047 is 7407866546.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6456687047 - 2⁴ = 6456687031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6456687047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456687077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20798 + ... + 115524.

It is an arithmetic number, because the mean of its divisors is an integer number (1614212484).

Almost surely, 2^6456687047 is an apocalyptic number.

6456687047 is a deficient number, since it is larger than the sum of its proper divisors (162889).

6456687047 is an equidigital number, since it uses as much as digits as its factorization.

6456687047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162888.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The square root of 6456687047 is about 80353.5129723648. The cubic root of 6456687047 is about 1862.1010526505.

The spelling of 6456687047 in words is "six billion, four hundred fifty-six million, six hundred eighty-seven thousand, forty-seven".