220288649 has 8 divisors (see below), whose sum is σ = 254354688. Its totient is φ = 186871680.

The previous prime is 220288633. The next prime is 220288657. The reversal of 220288649 is 946882022.

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

It is a cyclic number.

It is not a de Polignac number, because 220288649 - 2⁴ = 220288633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220288609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161537 + ... + 162894.

It is an arithmetic number, because the mean of its divisors is an integer number (31794336).

Almost surely, 2^220288649 is an apocalyptic number.

It is an amenable number.

220288649 is a deficient number, since it is larger than the sum of its proper divisors (34066039).

220288649 is an equidigital number, since it uses as much as digits as its factorization.

220288649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324535.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 220288649 is about 14842.1241404322. The cubic root of 220288649 is about 603.9449763846.

The spelling of 220288649 in words is "two hundred twenty million, two hundred eighty-eight thousand, six hundred forty-nine".