660706255 has 32 divisors (see below), whose sum is σ = 895795200. Its totient is φ = 463468800.

The previous prime is 660706253. The next prime is 660706259. The reversal of 660706255 is 552607066.

It is not a de Polignac number, because 660706255 - 2¹ = 660706253 is a prime.

It is a super-2 number, since 2×660706255² = 873065510792250050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660706253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816291 + ... + 817099.

It is an arithmetic number, because the mean of its divisors is an integer number (27993600).

Almost surely, 2^660706255 is an apocalyptic number.

660706255 is a deficient number, since it is larger than the sum of its proper divisors (235088945).

660706255 is a wasteful number, since it uses less digits than its factorization.

660706255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 660706255 is about 25704.2069513922. The cubic root of 660706255 is about 870.9692175544.

The spelling of 660706255 in words is "six hundred sixty million, seven hundred six thousand, two hundred fifty-five".