705043157 has 24 divisors (see below), whose sum is σ = 902643840. Its totient is φ = 538574400.

The previous prime is 705043151. The next prime is 705043189. The reversal of 705043157 is 751340507.

It is a de Polignac number, because none of the positive numbers 2^k-705043157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705043151) 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 in 23 ways as a sum of consecutive naturals, for example, 24032 + ... + 44582.

It is an arithmetic number, because the mean of its divisors is an integer number (37610160).

Almost surely, 2^705043157 is an apocalyptic number.

It is an amenable number.

705043157 is a deficient number, since it is larger than the sum of its proper divisors (197600683).

705043157 is a wasteful number, since it uses less digits than its factorization.

705043157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20613 (or 20600 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 705043157 is about 26552.6487755930. The cubic root of 705043157 is about 890.0312058241.

The spelling of 705043157 in words is "seven hundred five million, forty-three thousand, one hundred fifty-seven".