705800749 has 2 divisors, whose sum is σ = 705800750. Its totient is φ = 705800748.

The previous prime is 705800743. The next prime is 705800761. The reversal of 705800749 is 947008507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427745124 + 278055625 = 20682^2 + 16675^2 .

It is a cyclic number.

It is not a de Polignac number, because 705800749 - 2¹¹ = 705798701 is a prime.

It is a super-2 number, since 2×705800749² = 996309394577922002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705800743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352900374 + 352900375.

It is an arithmetic number, because the mean of its divisors is an integer number (352900375).

Almost surely, 2^705800749 is an apocalyptic number.

It is an amenable number.

705800749 is a deficient number, since it is larger than the sum of its proper divisors (1).

705800749 is an equidigital number, since it uses as much as digits as its factorization.

705800749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 705800749 is about 26566.9107914338. The cubic root of 705800749 is about 890.3498809513.

The spelling of 705800749 in words is "seven hundred five million, eight hundred thousand, seven hundred forty-nine".