6491047 has 2 divisors, whose sum is σ = 6491048. Its totient is φ = 6491046.

The previous prime is 6491039. The next prime is 6491081. The reversal of 6491047 is 7401946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6491047 - 2³ = 6491039 is a prime.

6491047 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6491747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245523 + 3245524.

It is an arithmetic number, because the mean of its divisors is an integer number (3245524).

Almost surely, 2^6491047 is an apocalyptic number.

6491047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6491047 is an equidigital number, since it uses as much as digits as its factorization.

6491047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6491047 is about 2547.7533240092. The cubic root of 6491047 is about 186.5398334129.

The spelling of 6491047 in words is "six million, four hundred ninety-one thousand, forty-seven".