6506506 has 4 divisors (see below), whose sum is σ = 9759762. Its totient is φ = 3253252.

The previous prime is 6506491. The next prime is 6506557. The reversal of 6506506 is 6056056.

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., 3767481 + 2739025 = 1941^2 + 1655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1626625 + ... + 1626628.

Almost surely, 2^6506506 is an apocalyptic number.

6506506 is a deficient number, since it is larger than the sum of its proper divisors (3253256).

6506506 is a wasteful number, since it uses less digits than its factorization.

6506506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253255.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 6506506 is about 2550.7853692539. The cubic root of 6506506 is about 186.6878030205.

The spelling of 6506506 in words is "six million, five hundred six thousand, five hundred six".