220613638 has 16 divisors (see below), whose sum is σ = 378432000. Its totient is φ = 94489416.

The previous prime is 220613633. The next prime is 220613651. The reversal of 220613638 is 836316022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220613633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24045 + ... + 31927.

It is an arithmetic number, because the mean of its divisors is an integer number (23652000).

Almost surely, 2^220613638 is an apocalyptic number.

220613638 is a deficient number, since it is larger than the sum of its proper divisors (157818362).

220613638 is a wasteful number, since it uses less digits than its factorization.

220613638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 220613638 is about 14853.0683025427. The cubic root of 220613638 is about 604.2418278610.

The spelling of 220613638 in words is "two hundred twenty million, six hundred thirteen thousand, six hundred thirty-eight".