220801647 has 12 divisors (see below), whose sum is σ = 323599640. Its totient is φ = 133818960.

The previous prime is 220801619. The next prime is 220801673. The reversal of 220801647 is 746108022.

It is not a de Polignac number, because 220801647 - 2¹⁰ = 220800623 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 (220801547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303772 + ... + 304497.

Almost surely, 2^220801647 is an apocalyptic number.

220801647 is a deficient number, since it is larger than the sum of its proper divisors (102797993).

220801647 is a wasteful number, since it uses less digits than its factorization.

220801647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608294 (or 608283 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 220801647 is about 14859.3959163891. The cubic root of 220801647 is about 604.4134259649.

Adding to 220801647 its reverse (746108022), we get a palindrome (966909669).

The spelling of 220801647 in words is "two hundred twenty million, eight hundred one thousand, six hundred forty-seven".