705761 has 4 divisors (see below), whose sum is σ = 806592. Its totient is φ = 604932.

The previous prime is 705751. The next prime is 705763. The reversal of 705761 is 167507.

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: 167507 = 191 ⋅877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705761 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 705761.

It is not an unprimeable number, because it can be changed into a prime (705763) 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, 50405 + ... + 50418.

It is an arithmetic number, because the mean of its divisors is an integer number (201648).

2⁷⁰⁵⁷⁶¹ is an apocalyptic number.

It is an amenable number.

705761 is a deficient number, since it is larger than the sum of its proper divisors (100831).

705761 is a wasteful number, since it uses less digits than its factorization.

705761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100830.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 705761 is about 840.0958278673. The cubic root of 705761 is about 89.0333166517.

The spelling of 705761 in words is "seven hundred five thousand, seven hundred sixty-one".