276605648 has 80 divisors (see below), whose sum is σ = 620168640. Its totient is φ = 118195200.

The previous prime is 276605647. The next prime is 276605663. The reversal of 276605648 is 846506672.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 276605599 and 276605608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276605647) 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 15 ways as a sum of consecutive naturals, for example, 605036 + ... + 605492.

It is an arithmetic number, because the mean of its divisors is an integer number (7752108).

Almost surely, 2^276605648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276605648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310084320).

276605648 is an abundant number, since it is smaller than the sum of its proper divisors (343562992).

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

276605648 is a wasteful number, since it uses less digits than its factorization.

276605648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 670 counting only the distinct ones).

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

The square root of 276605648 is about 16631.4655998802. The cubic root of 276605648 is about 651.5588997108.

The spelling of 276605648 in words is "two hundred seventy-six million, six hundred five thousand, six hundred forty-eight".