656272003 has 4 divisors (see below), whose sum is σ = 656328448. Its totient is φ = 656215560.

The previous prime is 656271899. The next prime is 656272007. The reversal of 656272003 is 300272656.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656272003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656272007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651 + ... + 36412.

It is an arithmetic number, because the mean of its divisors is an integer number (164082112).

Almost surely, 2^656272003 is an apocalyptic number.

656272003 is a deficient number, since it is larger than the sum of its proper divisors (56445).

656272003 is a wasteful number, since it uses less digits than its factorization.

656272003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56444.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 656272003 is about 25617.8063658854. The cubic root of 656272003 is about 869.0163732419.

The spelling of 656272003 in words is "six hundred fifty-six million, two hundred seventy-two thousand, three".