226972663 has 4 divisors (see below), whose sum is σ = 227964040. Its totient is φ = 225981288.

The previous prime is 226972649. The next prime is 226972673. The reversal of 226972663 is 366279622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366279622 = 2 ⋅183139811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226972663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226972633) 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, 495345 + ... + 495802.

It is an arithmetic number, because the mean of its divisors is an integer number (56991010).

Almost surely, 2^226972663 is an apocalyptic number.

226972663 is a deficient number, since it is larger than the sum of its proper divisors (991377).

226972663 is an equidigital number, since it uses as much as digits as its factorization.

226972663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991376.

The product of its digits is 326592, while the sum is 43.

The square root of 226972663 is about 15065.6119357960. The cubic root of 226972663 is about 609.9925314861.

The spelling of 226972663 in words is "two hundred twenty-six million, nine hundred seventy-two thousand, six hundred sixty-three".