1663334247 has 8 divisors (see below), whose sum is σ = 2348236656. Its totient is φ = 1043660672.

The previous prime is 1663334243. The next prime is 1663334269. The reversal of 1663334247 is 7424333661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1663334247 - 2² = 1663334243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663334243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16307148 + ... + 16307249.

It is an arithmetic number, because the mean of its divisors is an integer number (293529582).

Almost surely, 2^1663334247 is an apocalyptic number.

1663334247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1663334247 is a deficient number, since it is larger than the sum of its proper divisors (684902409).

1663334247 is a wasteful number, since it uses less digits than its factorization.

1663334247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32614417.

The product of its digits is 217728, while the sum is 39.

The square root of 1663334247 is about 40783.9949857784. The cubic root of 1663334247 is about 1184.8403701726.

The spelling of 1663334247 in words is "one billion, six hundred sixty-three million, three hundred thirty-four thousand, two hundred forty-seven".