6537667247 has 2 divisors, whose sum is σ = 6537667248. Its totient is φ = 6537667246.

The previous prime is 6537667243. The next prime is 6537667273. The reversal of 6537667247 is 7427667356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6537667247 - 2² = 6537667243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6537667243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3268833623 + 3268833624.

It is an arithmetic number, because the mean of its divisors is an integer number (3268833624).

Almost surely, 2^6537667247 is an apocalyptic number.

6537667247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6537667247 is an equidigital number, since it uses as much as digits as its factorization.

6537667247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 53.

The square root of 6537667247 is about 80855.8423801274. The cubic root of 6537667247 is about 1869.8535966865.

The spelling of 6537667247 in words is "six billion, five hundred thirty-seven million, six hundred sixty-seven thousand, two hundred forty-seven".