220067945 has 16 divisors (see below), whose sum is σ = 266906640. Its totient is φ = 174182400.

The previous prime is 220067923. The next prime is 220067957. The reversal of 220067945 is 549760022.

It can be written as a sum of positive squares in 8 ways, for example, as 29986576 + 190081369 = 5476^2 + 13787^2 .

It is not a de Polignac number, because 220067945 - 2²⁰ = 219019369 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, 217601 + ... + 218609.

It is an arithmetic number, because the mean of its divisors is an integer number (16681665).

Almost surely, 2^220067945 is an apocalyptic number.

It is an amenable number.

220067945 is a deficient number, since it is larger than the sum of its proper divisors (46838695).

220067945 is a wasteful number, since it uses less digits than its factorization.

220067945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 220067945 is about 14834.6872228571. The cubic root of 220067945 is about 603.7432144202.

The spelling of 220067945 in words is "two hundred twenty million, sixty-seven thousand, nine hundred forty-five".