268644646 has 8 divisors (see below), whose sum is σ = 420487344. Its totient is φ = 128482200.

The previous prime is 268644643. The next prime is 268644653. The reversal of 268644646 is 646446862.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 5840101 = 268644646 / (2 + 6 + 8 + 6 + 4 + 4 + 6 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 268644596 and 268644605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268644643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2920005 + ... + 2920096.

It is an arithmetic number, because the mean of its divisors is an integer number (52560918).

Almost surely, 2^268644646 is an apocalyptic number.

268644646 is a deficient number, since it is larger than the sum of its proper divisors (151842698).

268644646 is a wasteful number, since it uses less digits than its factorization.

268644646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840126.

The product of its digits is 1327104, while the sum is 46.

The square root of 268644646 is about 16390.3827289054. The cubic root of 268644646 is about 645.2471028057.

The spelling of 268644646 in words is "two hundred sixty-eight million, six hundred forty-four thousand, six hundred forty-six".