276564731 has 2 divisors, whose sum is σ = 276564732. Its totient is φ = 276564730.

The previous prime is 276564689. The next prime is 276564773. The reversal of 276564731 is 137465672.

It is a balanced prime because it is at equal distance from previous prime (276564689) and next prime (276564773).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-276564731 is a prime.

It is a super-2 number, since 2×276564731² = 152976100866204722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (276564791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138282365 + 138282366.

It is an arithmetic number, because the mean of its divisors is an integer number (138282366).

Almost surely, 2^276564731 is an apocalyptic number.

276564731 is a deficient number, since it is larger than the sum of its proper divisors (1).

276564731 is an equidigital number, since it uses as much as digits as its factorization.

276564731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 276564731 is about 16630.2354463189. The cubic root of 276564731 is about 651.5267707571.

The spelling of 276564731 in words is "two hundred seventy-six million, five hundred sixty-four thousand, seven hundred thirty-one".