705155249 has 2 divisors, whose sum is σ = 705155250. Its totient is φ = 705155248.

The previous prime is 705155239. The next prime is 705155251. The reversal of 705155249 is 942551507.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614296225 + 90859024 = 24785^2 + 9532^2 .

It is a cyclic number.

It is not a de Polignac number, because 705155249 - 2⁸ = 705154993 is a prime.

Together with 705155251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (705155219) 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, 352577624 + 352577625.

It is an arithmetic number, because the mean of its divisors is an integer number (352577625).

Almost surely, 2^705155249 is an apocalyptic number.

It is an amenable number.

705155249 is a deficient number, since it is larger than the sum of its proper divisors (1).

705155249 is an equidigital number, since it uses as much as digits as its factorization.

705155249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 705155249 is about 26554.7594415766. The cubic root of 705155249 is about 890.0783708288.

The spelling of 705155249 in words is "seven hundred five million, one hundred fifty-five thousand, two hundred forty-nine".