705885457 has 4 divisors (see below), whose sum is σ = 706249216. Its totient is φ = 705521700.

The previous prime is 705885451. The next prime is 705885487. The reversal of 705885457 is 754588507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754588507 = 53 ⋅14237519.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705885457 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 705885457.

It is not an unprimeable number, because it can be changed into a prime (705885451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178953 + ... + 182854.

It is an arithmetic number, because the mean of its divisors is an integer number (176562304).

Almost surely, 2^705885457 is an apocalyptic number.

It is an amenable number.

705885457 is a deficient number, since it is larger than the sum of its proper divisors (363759).

705885457 is a wasteful number, since it uses less digits than its factorization.

705885457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363758.

The product of its (nonzero) digits is 1568000, while the sum is 49.

The square root of 705885457 is about 26568.5049824035. The cubic root of 705885457 is about 890.3854985298.

The spelling of 705885457 in words is "seven hundred five million, eight hundred eighty-five thousand, four hundred fifty-seven".