705220417 has 8 divisors (see below), whose sum is σ = 770029920. Its totient is φ = 640527360.

The previous prime is 705220387. The next prime is 705220421. The reversal of 705220417 is 714022507.

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

It is not a de Polignac number, because 705220417 - 2²⁷ = 571002689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (705220717) 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, 16192 + ... + 40897.

It is an arithmetic number, because the mean of its divisors is an integer number (96253740).

Almost surely, 2^705220417 is an apocalyptic number.

It is an amenable number.

705220417 is a deficient number, since it is larger than the sum of its proper divisors (64809503).

705220417 is a wasteful number, since it uses less digits than its factorization.

705220417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58223.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 705220417 is about 26555.9864625662. The cubic root of 705220417 is about 890.1057893018.

It can be divided in two parts, 705 and 220417, that added together give a palindrome (221122).

The spelling of 705220417 in words is "seven hundred five million, two hundred twenty thousand, four hundred seventeen".