667280155 has 8 divisors (see below), whose sum is σ = 800881200. Its totient is φ = 533727456.

The previous prime is 667280137. The next prime is 667280183. The reversal of 667280155 is 551082766.

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 667280155 - 2¹⁵ = 667247387 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34881 + ... + 50509.

It is an arithmetic number, because the mean of its divisors is an integer number (100110150).

Almost surely, 2^667280155 is an apocalyptic number.

667280155 is a deficient number, since it is larger than the sum of its proper divisors (133601045).

667280155 is a wasteful number, since it uses less digits than its factorization.

667280155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24173.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 667280155 is about 25831.7663933383. The cubic root of 667280155 is about 873.8483482930.

The spelling of 667280155 in words is "six hundred sixty-seven million, two hundred eighty thousand, one hundred fifty-five".