656012473 has 8 divisors (see below), whose sum is σ = 701480520. Its totient is φ = 611308800.

The previous prime is 656012471. The next prime is 656012519. The reversal of 656012473 is 374210656.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 534395689 + 121616784 = 23117^2 + 11028^2 .

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 656012473 - 2¹ = 656012471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656012471) 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, 189318 + ... + 192751.

It is an arithmetic number, because the mean of its divisors is an integer number (87685065).

Almost surely, 2^656012473 is an apocalyptic number.

It is an amenable number.

656012473 is a deficient number, since it is larger than the sum of its proper divisors (45468047).

656012473 is a wasteful number, since it uses less digits than its factorization.

656012473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382187.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 656012473 is about 25612.7404429905. The cubic root of 656012473 is about 868.9018041023.

The spelling of 656012473 in words is "six hundred fifty-six million, twelve thousand, four hundred seventy-three".