705220361 has 8 divisors (see below), whose sum is σ = 715053864. Its totient is φ = 695439360.

The previous prime is 705220357. The next prime is 705220387. The reversal of 705220361 is 163022507.

It can be written as a sum of positive squares in 4 ways, for example, as 131905225 + 573315136 = 11485^2 + 23944^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 705220361 - 2² = 705220357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 705220361.

It is not an unprimeable number, because it can be changed into a prime (705220331) 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, 14321 + ... + 40193.

It is an arithmetic number, because the mean of its divisors is an integer number (89381733).

Almost surely, 2^705220361 is an apocalyptic number.

It is an amenable number.

705220361 is a deficient number, since it is larger than the sum of its proper divisors (9833503).

705220361 is a wasteful number, since it uses less digits than its factorization.

705220361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26251.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 705220361 is about 26555.9854081900. The cubic root of 705220361 is about 890.1057657413.

Adding to 705220361 its reverse (163022507), we get a palindrome (868242868).

The spelling of 705220361 in words is "seven hundred five million, two hundred twenty thousand, three hundred sixty-one".