6397669 has 4 divisors (see below), whose sum is σ = 6546496. Its totient is φ = 6248844.

The previous prime is 6397667. The next prime is 6397691. The reversal of 6397669 is 9667936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6397669 - 2¹ = 6397667 is a prime.

It is a super-2 number, since 2×6397669² = 81860337267122, 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 (6397667) 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, 74349 + ... + 74434.

It is an arithmetic number, because the mean of its divisors is an integer number (1636624).

Almost surely, 2^6397669 is an apocalyptic number.

It is an amenable number.

6397669 is a deficient number, since it is larger than the sum of its proper divisors (148827).

6397669 is a wasteful number, since it uses less digits than its factorization.

6397669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148826.

The product of its digits is 367416, while the sum is 46.

The square root of 6397669 is about 2529.3613818512. The cubic root of 6397669 is about 185.6410098916.

The spelling of 6397669 in words is "six million, three hundred ninety-seven thousand, six hundred sixty-nine".