6469997 has 4 divisors (see below), whose sum is σ = 6536796. Its totient is φ = 6403200.

The previous prime is 6469993. The next prime is 6470003. The reversal of 6469997 is 7999646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 4116841 = 1534^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 6469997 - 2² = 6469993 is a prime.

It is a super-2 number, since 2×6469997² = 83721722360018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33254 + ... + 33447.

It is an arithmetic number, because the mean of its divisors is an integer number (1634199).

Almost surely, 2^6469997 is an apocalyptic number.

It is an amenable number.

6469997 is a deficient number, since it is larger than the sum of its proper divisors (66799).

6469997 is an equidigital number, since it uses as much as digits as its factorization.

6469997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66798.

The product of its digits is 734832, while the sum is 50.

The square root of 6469997 is about 2543.6188786845. The cubic root of 6469997 is about 186.3379699443.

The spelling of 6469997 in words is "six million, four hundred sixty-nine thousand, nine hundred ninety-seven".