220672066 has 8 divisors (see below), whose sum is σ = 331083324. Its totient is φ = 110310960.

The previous prime is 220672063. The next prime is 220672069. The reversal of 220672066 is 660276022.

It is an interprime number because it is at equal distance from previous prime (220672063) and next prime (220672069).

It can be written as a sum of positive squares in 2 ways, for example, as 219662041 + 1010025 = 14821^2 + 1005^2 .

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

It is not an unprimeable number, because it can be changed into a prime (220672063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1696 + ... + 21076.

Almost surely, 2^220672066 is an apocalyptic number.

220672066 is a deficient number, since it is larger than the sum of its proper divisors (110411258).

220672066 is a wasteful number, since it uses less digits than its factorization.

220672066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25076.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 220672066 is about 14855.0350386662. The cubic root of 220672066 is about 604.2951662456.

The spelling of 220672066 in words is "two hundred twenty million, six hundred seventy-two thousand, sixty-six".