705220220 has 24 divisors (see below), whose sum is σ = 1481870544. Its totient is φ = 281915136.

The previous prime is 705220199. The next prime is 705220249. The reversal of 705220220 is 22022507.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 705220192 and 705220201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25619 + ... + 45461.

It is an arithmetic number, because the mean of its divisors is an integer number (61744606).

Almost surely, 2^705220220 is an apocalyptic number.

It is an amenable number.

705220220 is an abundant number, since it is smaller than the sum of its proper divisors (776650324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

705220220 is a wasteful number, since it uses less digits than its factorization.

705220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629 (or 21627 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 705220220 is about 26555.9827534211. The cubic root of 705220220 is about 890.1057064195.

Adding to 705220220 its reverse (22022507), we get a palindrome (727242727).

It can be divided in two parts, 7052 and 20220, that added together give a palindrome (27272).

The spelling of 705220220 in words is "seven hundred five million, two hundred twenty thousand, two hundred twenty".