705256530137 has 8 divisors (see below), whose sum is σ = 724423225800. Its totient is φ = 686095398144.

The previous prime is 705256530113. The next prime is 705256530169. The reversal of 705256530137 is 731035652507.

It can be written as a sum of positive squares in 4 ways, for example, as 257476071241 + 447780458896 = 507421^2 + 669164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 705256530137 - 2⁸ = 705256529881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705256530197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1133312 + ... + 1641617.

It is an arithmetic number, because the mean of its divisors is an integer number (90552903225).

Almost surely, 2^705256530137 is an apocalyptic number.

It is an amenable number.

705256530137 is a deficient number, since it is larger than the sum of its proper divisors (19166695663).

705256530137 is a wasteful number, since it uses less digits than its factorization.

705256530137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781835.

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 705256530137 in words is "seven hundred five billion, two hundred fifty-six million, five hundred thirty thousand, one hundred thirty-seven".