220961461 has 8 divisors (see below), whose sum is σ = 267382080. Its totient is φ = 178254528.

The previous prime is 220961417. The next prime is 220961479. The reversal of 220961461 is 164169022.

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

It is a cyclic number.

It is not a de Polignac number, because 220961461 - 2¹⁵ = 220928693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220961401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928291 + ... + 928528.

It is an arithmetic number, because the mean of its divisors is an integer number (33422760).

Almost surely, 2^220961461 is an apocalyptic number.

It is an amenable number.

220961461 is a deficient number, since it is larger than the sum of its proper divisors (46420619).

220961461 is a wasteful number, since it uses less digits than its factorization.

220961461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856843.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 220961461 is about 14864.7724839636. The cubic root of 220961461 is about 604.5592135732.

The spelling of 220961461 in words is "two hundred twenty million, nine hundred sixty-one thousand, four hundred sixty-one".