220340707 has 4 divisors (see below), whose sum is σ = 220380480. Its totient is φ = 220300936.

The previous prime is 220340693. The next prime is 220340719. The reversal of 220340707 is 707043022.

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

It is a cyclic number.

It is not a de Polignac number, because 220340707 - 2¹¹ = 220338659 is a prime.

It is a super-2 number, since 2×220340707² = 97100054322519698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220340797) 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, 9907 + ... + 23212.

It is an arithmetic number, because the mean of its divisors is an integer number (55095120).

Almost surely, 2^220340707 is an apocalyptic number.

220340707 is a deficient number, since it is larger than the sum of its proper divisors (39773).

220340707 is an equidigital number, since it uses as much as digits as its factorization.

220340707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39772.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 220340707 is about 14843.8777615554. The cubic root of 220340707 is about 603.9925468358.

Adding to 220340707 its reverse (707043022), we get a palindrome (927383729).

The spelling of 220340707 in words is "two hundred twenty million, three hundred forty thousand, seven hundred seven".