71893863 has 12 divisors (see below), whose sum is σ = 104303160. Its totient is φ = 47718576.

The previous prime is 71893793. The next prime is 71893903. The reversal of 71893863 is 36839817.

It is a happy number.

It is not a de Polignac number, because 71893863 - 2¹⁰ = 71892839 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71893363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15381 + ... + 19502.

It is an arithmetic number, because the mean of its divisors is an integer number (8691930).

Almost surely, 2^71893863 is an apocalyptic number.

71893863 is a deficient number, since it is larger than the sum of its proper divisors (32409297).

71893863 is a wasteful number, since it uses less digits than its factorization.

71893863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35118 (or 35115 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 71893863 is about 8479.0248849735. The cubic root of 71893863 is about 415.8122438433.

The spelling of 71893863 in words is "seventy-one million, eight hundred ninety-three thousand, eight hundred sixty-three".