472216665 has 8 divisors (see below), whose sum is σ = 755546688. Its totient is φ = 251848880.

The previous prime is 472216637. The next prime is 472216691. The reversal of 472216665 is 566612274.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 472216665 - 2⁶ = 472216601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15740541 + ... + 15740570.

It is an arithmetic number, because the mean of its divisors is an integer number (94443336).

Almost surely, 2^472216665 is an apocalyptic number.

It is an amenable number.

472216665 is a deficient number, since it is larger than the sum of its proper divisors (283330023).

472216665 is a wasteful number, since it uses less digits than its factorization.

472216665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31481119.

The product of its digits is 120960, while the sum is 39.

The square root of 472216665 is about 21730.5468177862. The cubic root of 472216665 is about 778.7183999881.

The spelling of 472216665 in words is "four hundred seventy-two million, two hundred sixteen thousand, six hundred sixty-five".