6477869 has 4 divisors (see below), whose sum is σ = 6615744. Its totient is φ = 6339996.

The previous prime is 6477859. The next prime is 6477871. The reversal of 6477869 is 9687746.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9687746 = 2 ⋅4843873.

It is a cyclic number.

It is not a de Polignac number, because 6477869 - 2¹⁶ = 6412333 is a prime.

It is a super-2 number, since 2×6477869² = 83925573562322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 137827 = 6477869 / (6 + 4 + 7 + 7 + 8 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477829) 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 in 3 ways as a sum of consecutive naturals, for example, 68867 + ... + 68960.

It is an arithmetic number, because the mean of its divisors is an integer number (1653936).

Almost surely, 2^6477869 is an apocalyptic number.

It is an amenable number.

6477869 is a deficient number, since it is larger than the sum of its proper divisors (137875).

6477869 is a wasteful number, since it uses less digits than its factorization.

6477869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137874.

The product of its digits is 508032, while the sum is 47.

The square root of 6477869 is about 2545.1658099228. The cubic root of 6477869 is about 186.4135113497.

The spelling of 6477869 in words is "six million, four hundred seventy-seven thousand, eight hundred sixty-nine".