705997223 has 4 divisors (see below), whose sum is σ = 709027488. Its totient is φ = 702966960.

The previous prime is 705997211. The next prime is 705997249. The reversal of 705997223 is 322799507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322799507 = 37 ⋅8724311.

It is a cyclic number.

It is not a de Polignac number, because 705997223 - 2⁴ = 705997207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705997423) 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, 1514783 + ... + 1515248.

It is an arithmetic number, because the mean of its divisors is an integer number (177256872).

Almost surely, 2^705997223 is an apocalyptic number.

705997223 is a deficient number, since it is larger than the sum of its proper divisors (3030265).

705997223 is a wasteful number, since it uses less digits than its factorization.

705997223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030264.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 705997223 is about 26570.6082542346. The cubic root of 705997223 is about 890.4324889553.

The spelling of 705997223 in words is "seven hundred five million, nine hundred ninety-seven thousand, two hundred twenty-three".