71683663 has 8 divisors (see below), whose sum is σ = 75159936. Its totient is φ = 68237400.

The previous prime is 71683657. The next prime is 71683669. The reversal of 71683663 is 36638617.

It is an interprime number because it is at equal distance from previous prime (71683657) and next prime (71683669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71683663 - 2⁵ = 71683631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71683669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2533 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (9394992).

Almost surely, 2^71683663 is an apocalyptic number.

71683663 is a deficient number, since it is larger than the sum of its proper divisors (3476273).

71683663 is a wasteful number, since it uses less digits than its factorization.

71683663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005.

The product of its digits is 108864, while the sum is 40.

The square root of 71683663 is about 8466.6205182469. The cubic root of 71683663 is about 415.4066039598.

The spelling of 71683663 in words is "seventy-one million, six hundred eighty-three thousand, six hundred sixty-three".