664963031 has 4 divisors (see below), whose sum is σ = 667945152. Its totient is φ = 661980912.

The previous prime is 664963027. The next prime is 664963043. The reversal of 664963031 is 130369466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130369466 = 2 ⋅65184733.

It is a cyclic number.

It is not a de Polignac number, because 664963031 - 2² = 664963027 is a prime.

It is a super-2 number, since 2×664963031² = 884351665193413922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664963081) 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, 1490726 + ... + 1491171.

It is an arithmetic number, because the mean of its divisors is an integer number (166986288).

Almost surely, 2^664963031 is an apocalyptic number.

664963031 is a deficient number, since it is larger than the sum of its proper divisors (2982121).

664963031 is a wasteful number, since it uses less digits than its factorization.

664963031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982120.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 664963031 is about 25786.8771083278. The cubic root of 664963031 is about 872.8356985517.

The spelling of 664963031 in words is "six hundred sixty-four million, nine hundred sixty-three thousand, thirty-one".