6340526447 has 4 divisors (see below), whose sum is σ = 6559165320. Its totient is φ = 6121887576.

The previous prime is 6340526443. The next prime is 6340526501. The reversal of 6340526447 is 7446250436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6340526447 - 2² = 6340526443 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 (6340526443) 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, 109319393 + ... + 109319450.

It is an arithmetic number, because the mean of its divisors is an integer number (1639791330).

Almost surely, 2^6340526447 is an apocalyptic number.

6340526447 is a deficient number, since it is larger than the sum of its proper divisors (218638873).

6340526447 is a wasteful number, since it uses less digits than its factorization.

6340526447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218638872.

The product of its (nonzero) digits is 483840, while the sum is 41.

The square root of 6340526447 is about 79627.4227072558. The cubic root of 6340526447 is about 1850.8665477309.

The spelling of 6340526447 in words is "six billion, three hundred forty million, five hundred twenty-six thousand, four hundred forty-seven".