667634360674255 has 24 divisors (see below), whose sum is σ = 886737875258592. Its totient is φ = 479697370100352.

The previous prime is 667634360674247. The next prime is 667634360674289. The reversal of 667634360674255 is 552476063436766.

It is not a de Polignac number, because 667634360674255 - 2³ = 667634360674247 is a prime.

It is a super-2 number, since 2×667634360674255² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3751298107 + ... + 3751476076.

It is an arithmetic number, because the mean of its divisors is an integer number (36947411469108).

Almost surely, 2^{667634360674255} is an apocalyptic number.

667634360674255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

667634360674255 is a deficient number, since it is larger than the sum of its proper divisors (219103514584337).

667634360674255 is a wasteful number, since it uses less digits than its factorization.

667634360674255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7502774275 (or 7502774238 counting only the distinct ones).

The product of its (nonzero) digits is 2743372800, while the sum is 70.

The spelling of 667634360674255 in words is "six hundred sixty-seven trillion, six hundred thirty-four billion, three hundred sixty million, six hundred seventy-four thousand, two hundred fifty-five".