76728811 has 2 divisors, whose sum is σ = 76728812. Its totient is φ = 76728810.

The previous prime is 76728793. The next prime is 76728833. The reversal of 76728811 is 11882767.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76728811 - 2¹⁷ = 76597739 is a prime.

It is not a weakly prime, because it can be changed into another prime (76728881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38364405 + 38364406.

It is an arithmetic number, because the mean of its divisors is an integer number (38364406).

Almost surely, 2^76728811 is an apocalyptic number.

76728811 is a deficient number, since it is larger than the sum of its proper divisors (1).

76728811 is an equidigital number, since it uses as much as digits as its factorization.

76728811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 40.

The square root of 76728811 is about 8759.4983303840. The cubic root of 76728811 is about 424.9320509593.

The spelling of 76728811 in words is "seventy-six million, seven hundred twenty-eight thousand, eight hundred eleven".