6662816 has 12 divisors (see below), whose sum is σ = 13117482. Its totient is φ = 3331392.

The previous prime is 6662813. The next prime is 6662839. The reversal of 6662816 is 6182666.

It can be written as a sum of positive squares in only one way, i.e., 5779216 + 883600 = 2404^2 + 940^2 .

It is not an unprimeable number, because it can be changed into a prime (6662813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104075 + ... + 104138.

Almost surely, 2^6662816 is an apocalyptic number.

It is an amenable number.

6662816 is a deficient number, since it is larger than the sum of its proper divisors (6454666).

6662816 is a wasteful number, since it uses less digits than its factorization.

6662816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208223 (or 208215 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 6662816 is about 2581.2431113710. The cubic root of 6662816 is about 188.1709626366.

The spelling of 6662816 in words is "six million, six hundred sixty-two thousand, eight hundred sixteen".