705487 has 4 divisors (see below), whose sum is σ = 722736. Its totient is φ = 688240.

The previous prime is 705461. The next prime is 705491. The reversal of 705487 is 784507.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 705487 - 2¹⁹ = 181199 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent 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, 8563 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (180684).

2⁷⁰⁵⁴⁸⁷ is an apocalyptic number.

705487 is a deficient number, since it is larger than the sum of its proper divisors (17249).

705487 is a wasteful number, since it uses less digits than its factorization.

705487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17248.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 705487 is about 839.9327354021. The cubic root of 705487 is about 89.0217932575.

The spelling of 705487 in words is "seven hundred five thousand, four hundred eighty-seven".