6477538 has 4 divisors (see below), whose sum is σ = 9716310. Its totient is φ = 3238768.

The previous prime is 6477533. The next prime is 6477577. The reversal of 6477538 is 8357746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8357746 = 2 ⋅4178873.

It can be written as a sum of positive squares in only one way, i.e., 6385729 + 91809 = 2527^2 + 303^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6477538.

It is not an unprimeable number, because it can be changed into a prime (6477533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619383 + ... + 1619386.

Almost surely, 2^6477538 is an apocalyptic number.

6477538 is a deficient number, since it is larger than the sum of its proper divisors (3238772).

6477538 is a wasteful number, since it uses less digits than its factorization.

6477538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238771.

The product of its digits is 141120, while the sum is 40.

The square root of 6477538 is about 2545.1007838591. The cubic root of 6477538 is about 186.4103362354.

The spelling of 6477538 in words is "six million, four hundred seventy-seven thousand, five hundred thirty-eight".