6491377 has 2 divisors, whose sum is σ = 6491378. Its totient is φ = 6491376.

The previous prime is 6491333. The next prime is 6491411. The reversal of 6491377 is 7731946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4177936 + 2313441 = 2044^2 + 1521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6491377 is a prime.

It is a super-2 number, since 2×6491377² = 84275950712258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6491477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245688 + 3245689.

It is an arithmetic number, because the mean of its divisors is an integer number (3245689).

Almost surely, 2^6491377 is an apocalyptic number.

It is an amenable number.

6491377 is a deficient number, since it is larger than the sum of its proper divisors (1).

6491377 is an equidigital number, since it uses as much as digits as its factorization.

6491377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 6491377 is about 2547.8180861278. The cubic root of 6491377 is about 186.5429945414.

The spelling of 6491377 in words is "six million, four hundred ninety-one thousand, three hundred seventy-seven".