505706705 has 12 divisors (see below), whose sum is σ = 705925620. Its totient is φ = 346770144.

The previous prime is 505706693. The next prime is 505706711. The reversal of 505706705 is 507607505.

It can be written as a sum of positive squares in 2 ways, for example, as 341251729 + 164454976 = 18473^2 + 12824^2 .

It is not a de Polignac number, because 505706705 - 2⁸ = 505706449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1031810 + ... + 1032299.

It is an arithmetic number, because the mean of its divisors is an integer number (58827135).

Almost surely, 2^505706705 is an apocalyptic number.

It is an amenable number.

505706705 is a deficient number, since it is larger than the sum of its proper divisors (200218915).

505706705 is a wasteful number, since it uses less digits than its factorization.

505706705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064128 (or 2064121 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 505706705 is about 22487.9235368675. The cubic root of 505706705 is about 796.7087201025.

It can be divided in two parts, 50570 and 6705, that added together give a palindrome (57275).

The spelling of 505706705 in words is "five hundred five million, seven hundred six thousand, seven hundred five".