71740787 has 2 divisors, whose sum is σ = 71740788. Its totient is φ = 71740786.

The previous prime is 71740759. The next prime is 71740811. The reversal of 71740787 is 78704717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71740787 - 2²⁰ = 70692211 is a prime.

It is not a weakly prime, because it can be changed into another prime (71740687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35870393 + 35870394.

It is an arithmetic number, because the mean of its divisors is an integer number (35870394).

Almost surely, 2^71740787 is an apocalyptic number.

71740787 is a deficient number, since it is larger than the sum of its proper divisors (1).

71740787 is an equidigital number, since it uses as much as digits as its factorization.

71740787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76832, while the sum is 41.

The square root of 71740787 is about 8469.9933293952. The cubic root of 71740787 is about 415.5169191294.

It can be divided in two parts, 71740 and 787, that added together give a palindrome (72527).

The spelling of 71740787 in words is "seventy-one million, seven hundred forty thousand, seven hundred eighty-seven".