276564680 has 64 divisors (see below), whose sum is σ = 728542080. Its totient is φ = 92505600.

The previous prime is 276564649. The next prime is 276564689. The reversal of 276564680 is 86465672.

It is not an unprimeable number, because it can be changed into a prime (276564689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566 + ... + 23525.

It is an arithmetic number, because the mean of its divisors is an integer number (11383470).

Almost surely, 2^276564680 is an apocalyptic number.

276564680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276564680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364271040).

276564680 is an abundant number, since it is smaller than the sum of its proper divisors (451977400).

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

276564680 is a wasteful number, since it uses less digits than its factorization.

276564680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24150 (or 24146 counting only the distinct ones).

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

The square root of 276564680 is about 16630.2339129671. The cubic root of 276564680 is about 651.5267307088.

The spelling of 276564680 in words is "two hundred seventy-six million, five hundred sixty-four thousand, six hundred eighty".