6438677 has 4 divisors (see below), whose sum is σ = 7358496. Its totient is φ = 5518860.

The previous prime is 6438661. The next prime is 6438697. The reversal of 6438677 is 7768346.

6438677 = 1464² + 1465² + 1466².

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 6438677 - 2⁴ = 6438661 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459899 + ... + 459912.

It is an arithmetic number, because the mean of its divisors is an integer number (1839624).

Almost surely, 2^6438677 is an apocalyptic number.

It is an amenable number.

6438677 is a deficient number, since it is larger than the sum of its proper divisors (919819).

6438677 is an equidigital number, since it uses as much as digits as its factorization.

6438677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919818.

The product of its digits is 169344, while the sum is 41.

The square root of 6438677 is about 2537.4548271841. The cubic root of 6438677 is about 186.0368081469.

The spelling of 6438677 in words is "six million, four hundred thirty-eight thousand, six hundred seventy-seven".