71663097 has 12 divisors (see below), whose sum is σ = 105027440. Its totient is φ = 43431960.

The previous prime is 71663087. The next prime is 71663099. The reversal of 71663097 is 79036617.

It is not a de Polignac number, because 71663097 - 2⁸ = 71662841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71663099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98347 + ... + 99072.

Almost surely, 2^71663097 is an apocalyptic number.

It is an amenable number.

71663097 is a deficient number, since it is larger than the sum of its proper divisors (33364343).

71663097 is a wasteful number, since it uses less digits than its factorization.

71663097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197444 (or 197433 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 71663097 is about 8465.4058969432. The cubic root of 71663097 is about 415.3668735247.

The spelling of 71663097 in words is "seventy-one million, six hundred sixty-three thousand, ninety-seven".