71268787 has 2 divisors, whose sum is σ = 71268788. Its totient is φ = 71268786.

The previous prime is 71268781. The next prime is 71268803. The reversal of 71268787 is 78786217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71268787 - 2¹⁵ = 71236019 is a prime.

It is not a weakly prime, because it can be changed into another prime (71268781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35634393 + 35634394.

It is an arithmetic number, because the mean of its divisors is an integer number (35634394).

Almost surely, 2^71268787 is an apocalyptic number.

71268787 is a deficient number, since it is larger than the sum of its proper divisors (1).

71268787 is an equidigital number, since it uses as much as digits as its factorization.

71268787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 46.

The square root of 71268787 is about 8442.0842805554. The cubic root of 71268787 is about 414.6036511971.

The spelling of 71268787 in words is "seventy-one million, two hundred sixty-eight thousand, seven hundred eighty-seven".