276641385 has 16 divisors (see below), whose sum is σ = 442848384. Its totient is φ = 147468032.

The previous prime is 276641363. The next prime is 276641413. The reversal of 276641385 is 583146672.

It is a cyclic number.

It is not a de Polignac number, because 276641385 - 2⁷ = 276641257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40369 + ... + 46721.

It is an arithmetic number, because the mean of its divisors is an integer number (27678024).

Almost surely, 2^276641385 is an apocalyptic number.

It is an amenable number.

276641385 is a deficient number, since it is larger than the sum of its proper divisors (166206999).

276641385 is a wasteful number, since it uses less digits than its factorization.

276641385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264.

The product of its digits is 241920, while the sum is 42.

The square root of 276641385 is about 16632.5399443380. The cubic root of 276641385 is about 651.5869586193.

The spelling of 276641385 in words is "two hundred seventy-six million, six hundred forty-one thousand, three hundred eighty-five".