255648667 has 8 divisors (see below), whose sum is σ = 269469200. Its totient is φ = 241864704.

The previous prime is 255648647. The next prime is 255648671. The reversal of 255648667 is 766846552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 12-Lehmer number, since φ(255648667) divides (255648667-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 255648667 - 2¹⁹ = 255124379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255648667.

It is not an unprimeable number, because it can be changed into a prime (255648637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5863 + ... + 23359.

It is an arithmetic number, because the mean of its divisors is an integer number (33683650).

Almost surely, 2^255648667 is an apocalyptic number.

255648667 is a deficient number, since it is larger than the sum of its proper divisors (13820533).

255648667 is a wasteful number, since it uses less digits than its factorization.

255648667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285.

The product of its digits is 2419200, while the sum is 49.

The square root of 255648667 is about 15989.0170742294. The cubic root of 255648667 is about 634.6698157354.

The spelling of 255648667 in words is "two hundred fifty-five million, six hundred forty-eight thousand, six hundred sixty-seven".