731664871 has 8 divisors (see below), whose sum is σ = 836378784. Its totient is φ = 626998560.

The previous prime is 731664851. The next prime is 731664877. The reversal of 731664871 is 178466137.

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 731664871 - 2⁷ = 731664743 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 (731664877) 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, 31701 + ... + 49681.

It is an arithmetic number, because the mean of its divisors is an integer number (104547348).

Almost surely, 2^731664871 is an apocalyptic number.

731664871 is a deficient number, since it is larger than the sum of its proper divisors (104713913).

731664871 is a wasteful number, since it uses less digits than its factorization.

731664871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23801.

The product of its digits is 169344, while the sum is 43.

The square root of 731664871 is about 27049.3044457709. The cubic root of 731664871 is about 901.0953211601.

The spelling of 731664871 in words is "seven hundred thirty-one million, six hundred sixty-four thousand, eight hundred seventy-one".