6506938 has 4 divisors (see below), whose sum is σ = 9760410. Its totient is φ = 3253468.

The previous prime is 6506921. The next prime is 6506939. The reversal of 6506938 is 8396056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4782969 + 1723969 = 2187^2 + 1313^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6506897 and 6506906.

It is not an unprimeable number, because it can be changed into a prime (6506939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1626733 + ... + 1626736.

Almost surely, 2^6506938 is an apocalyptic number.

6506938 is a deficient number, since it is larger than the sum of its proper divisors (3253472).

6506938 is a wasteful number, since it uses less digits than its factorization.

6506938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253471.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 6506938 is about 2550.8700476504. The cubic root of 6506938 is about 186.6919346464.

It can be divided in two parts, 6 and 506938, that added together give a square (506944 = 712²).

The spelling of 6506938 in words is "six million, five hundred six thousand, nine hundred thirty-eight".