71020787 has 2 divisors, whose sum is σ = 71020788. Its totient is φ = 71020786.

The previous prime is 71020777. The next prime is 71020801. The reversal of 71020787 is 78702017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71020787 - 2¹⁰ = 71019763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71020717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35510393 + 35510394.

It is an arithmetic number, because the mean of its divisors is an integer number (35510394).

Almost surely, 2^71020787 is an apocalyptic number.

71020787 is a deficient number, since it is larger than the sum of its proper divisors (1).

71020787 is an equidigital number, since it uses as much as digits as its factorization.

71020787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 71020787 is about 8427.3831644230. The cubic root of 71020787 is about 414.1221818811.

The spelling of 71020787 in words is "seventy-one million, twenty thousand, seven hundred eighty-seven".