220641147 has 24 divisors (see below), whose sum is σ = 340952976. Its totient is φ = 137005056.

The previous prime is 220641143. The next prime is 220641151. The reversal of 220641147 is 741146022.

220641147 is a `hidden beast` number, since 2 + 2 + 0 + 641 + 14 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (220641143) and next prime (220641151).

It is not a de Polignac number, because 220641147 - 2² = 220641143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220641147.

It is not an unprimeable number, because it can be changed into a prime (220641143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7408 + ... + 22274.

It is an arithmetic number, because the mean of its divisors is an integer number (14206374).

Almost surely, 2^220641147 is an apocalyptic number.

220641147 is a deficient number, since it is larger than the sum of its proper divisors (120311829).

220641147 is a wasteful number, since it uses less digits than its factorization.

220641147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987 (or 14984 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 220641147 is about 14853.9943112955. The cubic root of 220641147 is about 604.2669417475.

Adding to 220641147 its reverse (741146022), we get a palindrome (961787169).

The spelling of 220641147 in words is "two hundred twenty million, six hundred forty-one thousand, one hundred forty-seven".