667181255 has 16 divisors (see below), whose sum is σ = 870748704. Its totient is φ = 487804800.

The previous prime is 667181239. The next prime is 667181329. The reversal of 667181255 is 552181766.

It is not a de Polignac number, because 667181255 - 2⁴ = 667181239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44249 + ... + 57378.

It is an arithmetic number, because the mean of its divisors is an integer number (54421794).

Almost surely, 2^667181255 is an apocalyptic number.

667181255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

667181255 is a deficient number, since it is larger than the sum of its proper divisors (203567449).

667181255 is a wasteful number, since it uses less digits than its factorization.

667181255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101746.

The product of its digits is 100800, while the sum is 41.

The square root of 667181255 is about 25829.8520127391. The cubic root of 667181255 is about 873.8051740875.

The spelling of 667181255 in words is "six hundred sixty-seven million, one hundred eighty-one thousand, two hundred fifty-five".