705138 has 32 divisors (see below), whose sum is σ = 1637376. Its totient is φ = 198288.

The previous prime is 705137. The next prime is 705161. The reversal of 705138 is 831507.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 705138.

It is not an unprimeable number, because it can be changed into a prime (705137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245 + ... + 4407.

It is an arithmetic number, because the mean of its divisors is an integer number (51168).

2⁷⁰⁵¹³⁸ is an apocalyptic number.

705138 is an abundant number, since it is smaller than the sum of its proper divisors (932238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

705138 is a wasteful number, since it uses less digits than its factorization.

705138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 705138 is about 839.7249549704. The cubic root of 705138 is about 89.0071113284.

The spelling of 705138 in words is "seven hundred five thousand, one hundred thirty-eight".