6499667 has 2 divisors, whose sum is σ = 6499668. Its totient is φ = 6499666.

The previous prime is 6499663. The next prime is 6499673. The reversal of 6499667 is 7669946.

6499667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6499667 - 2² = 6499663 is a prime.

It is a super-2 number, since 2×6499667² = 84491342221778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6499663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249833 + 3249834.

It is an arithmetic number, because the mean of its divisors is an integer number (3249834).

Almost surely, 2^6499667 is an apocalyptic number.

6499667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499667 is an equidigital number, since it uses as much as digits as its factorization.

6499667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 6499667 is about 2549.4444492869. Note that the first 5 decimals coincide. The cubic root of 6499667 is about 186.6223707961.

The spelling of 6499667 in words is "six million, four hundred ninety-nine thousand, six hundred sixty-seven".