268187649 has 8 divisors (see below), whose sum is σ = 359777952. Its totient is φ = 177694560.

The previous prime is 268187617. The next prime is 268187653. The reversal of 268187649 is 946781862.

268187649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 268187649 - 2⁵ = 268187617 is a prime.

It is a super-2 number, since 2×268187649² = 143849230152294402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268187609) 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, 273732 + ... + 274709.

It is an arithmetic number, because the mean of its divisors is an integer number (44972244).

Almost surely, 2^268187649 is an apocalyptic number.

It is an amenable number.

268187649 is a deficient number, since it is larger than the sum of its proper divisors (91590303).

268187649 is a wasteful number, since it uses less digits than its factorization.

268187649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548607.

The product of its digits is 1161216, while the sum is 51.

The square root of 268187649 is about 16376.4357843824. The cubic root of 268187649 is about 644.8810140469.

The spelling of 268187649 in words is "two hundred sixty-eight million, one hundred eighty-seven thousand, six hundred forty-nine".