220606601 has 4 divisors (see below), whose sum is σ = 221825604. Its totient is φ = 219387600.

The previous prime is 220606591. The next prime is 220606627. The reversal of 220606601 is 106606022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106606022 = 2 ⋅53303011.

It can be written as a sum of positive squares in 2 ways, for example, as 6130576 + 214476025 = 2476^2 + 14645^2 .

It is a cyclic number.

It is not a de Polignac number, because 220606601 - 2⁶ = 220606537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220606651) 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, 609230 + ... + 609591.

It is an arithmetic number, because the mean of its divisors is an integer number (55456401).

Almost surely, 2^220606601 is an apocalyptic number.

It is an amenable number.

220606601 is a deficient number, since it is larger than the sum of its proper divisors (1219003).

220606601 is a wasteful number, since it uses less digits than its factorization.

220606601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219002.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 220606601 is about 14852.8314135723. The cubic root of 220606601 is about 604.2354032129.

The spelling of 220606601 in words is "two hundred twenty million, six hundred six thousand, six hundred one".