220405463 has 8 divisors (see below), whose sum is σ = 227435040. Its totient is φ = 213454720.

The previous prime is 220405447. The next prime is 220405499. The reversal of 220405463 is 364504022.

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 220405463 - 2⁴ = 220405447 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 (220405433) 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, 14003 + ... + 25236.

It is an arithmetic number, because the mean of its divisors is an integer number (28429380).

Almost surely, 2^220405463 is an apocalyptic number.

220405463 is a deficient number, since it is larger than the sum of its proper divisors (7029577).

220405463 is a wasteful number, since it uses less digits than its factorization.

220405463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39417.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 220405463 is about 14846.0588372807. The cubic root of 220405463 is about 604.0517102271.

Adding to 220405463 its reverse (364504022), we get a palindrome (584909485).

The spelling of 220405463 in words is "two hundred twenty million, four hundred five thousand, four hundred sixty-three".