71913163 has 8 divisors (see below), whose sum is σ = 84408032. Its totient is φ = 59973696.

The previous prime is 71913143. The next prime is 71913167. The reversal of 71913163 is 36131917.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71913163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71913167) 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 7 ways as a sum of consecutive naturals, for example, 138570 + ... + 139087.

It is an arithmetic number, because the mean of its divisors is an integer number (10551004).

Almost surely, 2^71913163 is an apocalyptic number.

71913163 is a deficient number, since it is larger than the sum of its proper divisors (12494869).

71913163 is a wasteful number, since it uses less digits than its factorization.

71913163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277701.

The product of its digits is 3402, while the sum is 31.

The square root of 71913163 is about 8480.1629111710. The cubic root of 71913163 is about 415.8494489582.

The spelling of 71913163 in words is "seventy-one million, nine hundred thirteen thousand, one hundred sixty-three".