731330663 has 4 divisors (see below), whose sum is σ = 835806480. Its totient is φ = 626854848.

The previous prime is 731330659. The next prime is 731330683. The reversal of 731330663 is 366033137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366033137 = 17 ⋅21531361.

It is a cyclic number.

It is not a de Polignac number, because 731330663 - 2² = 731330659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731330683) 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 3 ways as a sum of consecutive naturals, for example, 52237898 + ... + 52237911.

It is an arithmetic number, because the mean of its divisors is an integer number (208951620).

Almost surely, 2^731330663 is an apocalyptic number.

731330663 is a deficient number, since it is larger than the sum of its proper divisors (104475817).

731330663 is a wasteful number, since it uses less digits than its factorization.

731330663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104475816.

The product of its (nonzero) digits is 20412, while the sum is 32.

The square root of 731330663 is about 27043.1259842497. The cubic root of 731330663 is about 900.9581002630.

The spelling of 731330663 in words is "seven hundred thirty-one million, three hundred thirty thousand, six hundred sixty-three".