276739668 has 108 divisors (see below), whose sum is σ = 762013980. Its totient is φ = 84387840.

The previous prime is 276739621. The next prime is 276739669. The reversal of 276739668 is 866937672.

It can be written as a sum of positive squares in 6 ways, for example, as 109244304 + 167495364 = 10452^2 + 12942^2 .

Its product of digits (4572288) is a multiple of the sum of its prime factors (378).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276739669) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1028638 + ... + 1028906.

It is an arithmetic number, because the mean of its divisors is an integer number (7055685).

Almost surely, 2^276739668 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 276739668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381006990).

276739668 is an abundant number, since it is smaller than the sum of its proper divisors (485274312).

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

276739668 is a wasteful number, since it uses less digits than its factorization.

276739668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 332 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 276739668 is about 16635.4942216936. The cubic root of 276739668 is about 651.6641130656.

The spelling of 276739668 in words is "two hundred seventy-six million, seven hundred thirty-nine thousand, six hundred sixty-eight".