220946487 has 8 divisors (see below), whose sum is σ = 307403904. Its totient is φ = 140893368.

The previous prime is 220946471. The next prime is 220946491. The reversal of 220946487 is 784649022.

220946487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 220946487 - 2⁴ = 220946471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220946437) 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, 1600993 + ... + 1601130.

It is an arithmetic number, because the mean of its divisors is an integer number (38425488).

Almost surely, 2^220946487 is an apocalyptic number.

220946487 is a deficient number, since it is larger than the sum of its proper divisors (86457417).

220946487 is a wasteful number, since it uses less digits than its factorization.

220946487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202149.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 220946487 is about 14864.2688013908. The cubic root of 220946487 is about 604.5455567812.

The spelling of 220946487 in words is "two hundred twenty million, nine hundred forty-six thousand, four hundred eighty-seven".