705457 has 4 divisors (see below), whose sum is σ = 709236. Its totient is φ = 701680.

The previous prime is 705437. The next prime is 705461. The reversal of 705457 is 754507.

705457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 39601 = 816^2 + 199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705427) 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, 1594 + ... + 1987.

It is an arithmetic number, because the mean of its divisors is an integer number (177309).

2⁷⁰⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

705457 is a deficient number, since it is larger than the sum of its proper divisors (3779).

705457 is a wasteful number, since it uses less digits than its factorization.

705457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 705457 is about 839.9148766393. The cubic root of 705457 is about 89.0205313908.

The spelling of 705457 in words is "seven hundred five thousand, four hundred fifty-seven".