220087407 has 4 divisors (see below), whose sum is σ = 293449880. Its totient is φ = 146724936.

The previous prime is 220087403. The next prime is 220087421. The reversal of 220087407 is 704780022.

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

It is not a de Polignac number, because 220087407 - 2² = 220087403 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 (220087403) 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, 36681232 + ... + 36681237.

It is an arithmetic number, because the mean of its divisors is an integer number (73362470).

Almost surely, 2^220087407 is an apocalyptic number.

220087407 is a deficient number, since it is larger than the sum of its proper divisors (73362473).

220087407 is an equidigital number, since it uses as much as digits as its factorization.

220087407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73362472.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 220087407 is about 14835.3431709550. The cubic root of 220087407 is about 603.7610115057.

The spelling of 220087407 in words is "two hundred twenty million, eighty-seven thousand, four hundred seven".