664950072703 has 12 divisors (see below), whose sum is σ = 819014136192. Its totient is φ = 536430310080.

The previous prime is 664950072701. The next prime is 664950072707. The reversal of 664950072703 is 307270059466.

It is not a de Polignac number, because 664950072703 - 2¹ = 664950072701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664950072701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399128863 + ... + 399130528.

It is an arithmetic number, because the mean of its divisors is an integer number (68251178016).

Almost surely, 2^664950072703 is an apocalyptic number.

664950072703 is a deficient number, since it is larger than the sum of its proper divisors (154064063489).

664950072703 is a wasteful number, since it uses less digits than its factorization.

664950072703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798259422 (or 798259415 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 664950072703 in words is "six hundred sixty-four billion, nine hundred fifty million, seventy-two thousand, seven hundred three".