276668865 has 96 divisors (see below), whose sum is σ = 550158336. Its totient is φ = 132269760.

The previous prime is 276668849. The next prime is 276668867. The reversal of 276668865 is 568866672.

It is not a de Polignac number, because 276668865 - 2⁴ = 276668849 is a prime.

It is a super-3 number, since 3×276668865³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (276668867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1697274 + ... + 1697436.

It is an arithmetic number, because the mean of its divisors is an integer number (5730816).

Almost surely, 2^276668865 is an apocalyptic number.

It is an amenable number.

276668865 is a deficient number, since it is larger than the sum of its proper divisors (273489471).

276668865 is a wasteful number, since it uses less digits than its factorization.

276668865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 309 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 276668865 is about 16633.3660153320. The cubic root of 276668865 is about 651.6085329001.

It can be divided in two parts, 2766 and 68865, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 276668865 in words is "two hundred seventy-six million, six hundred sixty-eight thousand, eight hundred sixty-five".