472756643 has 4 divisors (see below), whose sum is σ = 472803240. Its totient is φ = 472710048.

The previous prime is 472756607. The next prime is 472756657. The reversal of 472756643 is 346657274.

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, and also an emirpimes, since its reverse is a distinct semiprime: 346657274 = 2 ⋅173328637.

It is a cyclic number.

It is not a de Polignac number, because 472756643 - 2²⁰ = 471708067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 472756594 and 472756603.

It is not an unprimeable number, because it can be changed into a prime (472756243) 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, 905 + ... + 30762.

It is an arithmetic number, because the mean of its divisors is an integer number (118200810).

Almost surely, 2^472756643 is an apocalyptic number.

472756643 is a deficient number, since it is larger than the sum of its proper divisors (46597).

472756643 is a wasteful number, since it uses less digits than its factorization.

472756643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46596.

The product of its digits is 846720, while the sum is 44.

The square root of 472756643 is about 21742.9676677311. The cubic root of 472756643 is about 779.0151074535.

The spelling of 472756643 in words is "four hundred seventy-two million, seven hundred fifty-six thousand, six hundred forty-three".