6498744671 has 4 divisors (see below), whose sum is σ = 6649878312. Its totient is φ = 6347611032.

The previous prime is 6498744641. The next prime is 6498744673. The reversal of 6498744671 is 1764478946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1764478946 = 2 ⋅882239473.

It is a cyclic number.

It is not a de Polignac number, because 6498744671 - 2¹⁴ = 6498728287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6498744673) 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, 75566756 + ... + 75566841.

It is an arithmetic number, because the mean of its divisors is an integer number (1662469578).

Almost surely, 2^6498744671 is an apocalyptic number.

6498744671 is a deficient number, since it is larger than the sum of its proper divisors (151133641).

6498744671 is a wasteful number, since it uses less digits than its factorization.

6498744671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151133640.

The product of its digits is 8128512, while the sum is 56.

The square root of 6498744671 is about 80614.7918870972. The cubic root of 6498744671 is about 1866.1354288916.

The spelling of 6498744671 in words is "six billion, four hundred ninety-eight million, seven hundred forty-four thousand, six hundred seventy-one".