220744545 has 16 divisors (see below), whose sum is σ = 403647360. Its totient is φ = 100911744.

The previous prime is 220744471. The next prime is 220744567. The reversal of 220744545 is 545447022.

It is not a de Polignac number, because 220744545 - 2¹⁷ = 220613473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051060 + ... + 1051269.

It is an arithmetic number, because the mean of its divisors is an integer number (25227960).

Almost surely, 2^220744545 is an apocalyptic number.

It is an amenable number.

220744545 is a deficient number, since it is larger than the sum of its proper divisors (182902815).

220744545 is a wasteful number, since it uses less digits than its factorization.

220744545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102344.

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 220744545 is about 14857.4743816034. The cubic root of 220744545 is about 604.3613185772.

The spelling of 220744545 in words is "two hundred twenty million, seven hundred forty-four thousand, five hundred forty-five".