705250 has 64 divisors (see below), whose sum is σ = 1677312. Its totient is φ = 216000.

The previous prime is 705247. The next prime is 705259. The reversal of 705250 is 52507.

705250 = 145² + 146² + ... + 172².

It is a happy number.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (705259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22735 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2⁷⁰⁵²⁵⁰ is an apocalyptic number.

705250 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

705250 is an abundant number, since it is smaller than the sum of its proper divisors (972062).

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

705250 is a wasteful number, since it uses less digits than its factorization.

705250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 705250 is about 839.7916408253. The cubic root of 705250 is about 89.0118235354.

Adding to 705250 its product of nonzero digits (350), we get a square (705600 = 840²).

Adding to 705250 its reverse (52507), we get a palindrome (757757).

The spelling of 705250 in words is "seven hundred five thousand, two hundred fifty".