276736993 has 6 divisors (see below), whose sum is σ = 299662134. Its totient is φ = 255449376.

The previous prime is 276736961. The next prime is 276736997. The reversal of 276736993 is 399637672.

It can be written as a sum of positive squares in 3 ways, for example, as 113569 + 276623424 = 337^2 + 16632^2 .

It is not a de Polignac number, because 276736993 - 2⁵ = 276736961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 276736993.

It is not an unprimeable number, because it can be changed into a prime (276736997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 818580 + ... + 818917.

It is an arithmetic number, because the mean of its divisors is an integer number (49943689).

Almost surely, 2^276736993 is an apocalyptic number.

It is an amenable number.

276736993 is a deficient number, since it is larger than the sum of its proper divisors (22925141).

276736993 is a wasteful number, since it uses less digits than its factorization.

276736993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637523 (or 1637510 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 52.

The square root of 276736993 is about 16635.4138211227. The cubic root of 276736993 is about 651.6620133701.

It can be divided in two parts, 276736 and 993, that added together give a square (277729 = 527²).

The spelling of 276736993 in words is "two hundred seventy-six million, seven hundred thirty-six thousand, nine hundred ninety-three".