276623689 has 2 divisors, whose sum is σ = 276623690. Its totient is φ = 276623688.

The previous prime is 276623671. The next prime is 276623719. The reversal of 276623689 is 986326672.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228251664 + 48372025 = 15108^2 + 6955^2 .

It is a cyclic number.

It is not a de Polignac number, because 276623689 - 2⁷ = 276623561 is a prime.

It is not a weakly prime, because it can be changed into another prime (276623639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138311844 + 138311845.

It is an arithmetic number, because the mean of its divisors is an integer number (138311845).

Almost surely, 2^276623689 is an apocalyptic number.

It is an amenable number.

276623689 is a deficient number, since it is larger than the sum of its proper divisors (1).

276623689 is an equidigital number, since it uses as much as digits as its factorization.

276623689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 276623689 is about 16632.0079665686. The cubic root of 276623689 is about 651.5730649055.

The spelling of 276623689 in words is "two hundred seventy-six million, six hundred twenty-three thousand, six hundred eighty-nine".