6499969 has 8 divisors (see below), whose sum is σ = 7443968. Its totient is φ = 5559840.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499969 is 9699946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6499969 - 2⁷ = 6499841 is a prime.

It is a super-2 number, since 2×6499969² = 84499194001922, which contains 22 as substring.

6499969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6499939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6064 + ... + 7054.

It is an arithmetic number, because the mean of its divisors is an integer number (930496).

Almost surely, 2^6499969 is an apocalyptic number.

It is an amenable number.

6499969 is a deficient number, since it is larger than the sum of its proper divisors (943999).

6499969 is an equidigital number, since it uses as much as digits as its factorization.

6499969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its digits is 944784, while the sum is 52.

The square root of 6499969 is about 2549.5036771890. The cubic root of 6499969 is about 186.6252611536.

The spelling of 6499969 in words is "six million, four hundred ninety-nine thousand, nine hundred sixty-nine".