71607663 has 6 divisors (see below), whose sum is σ = 103433304. Its totient is φ = 47738436.

The previous prime is 71607643. The next prime is 71607667. The reversal of 71607663 is 36670617.

It is not a de Polignac number, because 71607663 - 2¹⁴ = 71591279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71607667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3978195 + ... + 3978212.

It is an arithmetic number, because the mean of its divisors is an integer number (17238884).

Almost surely, 2^71607663 is an apocalyptic number.

71607663 is a deficient number, since it is larger than the sum of its proper divisors (31825641).

71607663 is a wasteful number, since it uses less digits than its factorization.

71607663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7956413 (or 7956410 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 71607663 is about 8462.1311145597. The cubic root of 71607663 is about 415.2597454593.

The spelling of 71607663 in words is "seventy-one million, six hundred seven thousand, six hundred sixty-three".