276805664 has 48 divisors (see below), whose sum is σ = 558200160. Its totient is φ = 135083520.

The previous prime is 276805649. The next prime is 276805681. The reversal of 276805664 is 466508672.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 235799 + ... + 236969.

It is an arithmetic number, because the mean of its divisors is an integer number (11629170).

Almost surely, 2^276805664 is an apocalyptic number.

It is an amenable number.

276805664 is an abundant number, since it is smaller than the sum of its proper divisors (281394496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

276805664 is a wasteful number, since it uses less digits than its factorization.

276805664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 276805664 is about 16637.4776934486. The cubic root of 276805664 is about 651.7159112132.

The spelling of 276805664 in words is "two hundred seventy-six million, eight hundred five thousand, six hundred sixty-four".