664003031 has 8 divisors (see below), whose sum is σ = 703215744. Its totient is φ = 625652280.

The previous prime is 664003007. The next prime is 664003049. The reversal of 664003031 is 130300466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664003031 is a prime.

It is a super-2 number, since 2×664003031² = 881800050354373922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664002988 and 664003006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664003231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213905 + ... + 216986.

It is an arithmetic number, because the mean of its divisors is an integer number (87901968).

Almost surely, 2^664003031 is an apocalyptic number.

664003031 is a deficient number, since it is larger than the sum of its proper divisors (39212713).

664003031 is a wasteful number, since it uses less digits than its factorization.

664003031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430981.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 664003031 is about 25768.2562661892. The cubic root of 664003031 is about 872.4154617424.

Adding to 664003031 its reverse (130300466), we get a palindrome (794303497).

The spelling of 664003031 in words is "six hundred sixty-four million, three thousand, thirty-one".