6442477 has 4 divisors (see below), whose sum is σ = 6616636. Its totient is φ = 6268320.

The previous prime is 6442459. The next prime is 6442481. The reversal of 6442477 is 7742446.

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 3798601 + 2643876 = 1949^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 6442477 - 2¹¹ = 6440429 is a prime.

6442477 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442427) 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, 87024 + ... + 87097.

It is an arithmetic number, because the mean of its divisors is an integer number (1654159).

Almost surely, 2^6442477 is an apocalyptic number.

It is an amenable number.

6442477 is a deficient number, since it is larger than the sum of its proper divisors (174159).

6442477 is a wasteful number, since it uses less digits than its factorization.

6442477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174158.

The product of its digits is 37632, while the sum is 34.

The square root of 6442477 is about 2538.2034985399. The cubic root of 6442477 is about 186.0733995585.

The spelling of 6442477 in words is "six million, four hundred forty-two thousand, four hundred seventy-seven".