814646648 has 16 divisors (see below), whose sum is σ = 1530768480. Its totient is φ = 406441728.

The previous prime is 814646563. The next prime is 814646659. The reversal of 814646648 is 846646418.

It is a super-2 number, since 2×814646648² = 1327298322195271808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 106265 + ... + 113672.

It is an arithmetic number, because the mean of its divisors is an integer number (95673030).

Almost surely, 2^814646648 is an apocalyptic number.

It is an amenable number.

814646648 is a deficient number, since it is larger than the sum of its proper divisors (716121832).

814646648 is a wasteful number, since it uses less digits than its factorization.

814646648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220406 (or 220402 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 814646648 is about 28542.0154859463. The cubic root of 814646648 is about 933.9488498844.

The spelling of 814646648 in words is "eight hundred fourteen million, six hundred forty-six thousand, six hundred forty-eight".