220266461 has 4 divisors (see below), whose sum is σ = 221407932. Its totient is φ = 219124992.

The previous prime is 220266451. The next prime is 220266509. The reversal of 220266461 is 164662022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46158436 + 174108025 = 6794^2 + 13195^2 .

It is a cyclic number.

It is not a de Polignac number, because 220266461 - 2²⁶ = 153157597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220266401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570446 + ... + 570831.

It is an arithmetic number, because the mean of its divisors is an integer number (55351983).

Almost surely, 2^220266461 is an apocalyptic number.

It is an amenable number.

220266461 is a deficient number, since it is larger than the sum of its proper divisors (1141471).

220266461 is a wasteful number, since it uses less digits than its factorization.

220266461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141470.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 220266461 is about 14841.3766544752. The cubic root of 220266461 is about 603.9246987759.

The spelling of 220266461 in words is "two hundred twenty million, two hundred sixty-six thousand, four hundred sixty-one".