71107913 has 8 divisors (see below), whose sum is σ = 74569800. Its totient is φ = 67713408.

The previous prime is 71107909. The next prime is 71107919. The reversal of 71107913 is 31970117.

It can be written as a sum of positive squares in 4 ways, for example, as 34951744 + 36156169 = 5912^2 + 6013^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71107913 - 2² = 71107909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71107919) 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 7 ways as a sum of consecutive naturals, for example, 14678 + ... + 18911.

It is an arithmetic number, because the mean of its divisors is an integer number (9321225).

Almost surely, 2^71107913 is an apocalyptic number.

71107913 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

71107913 is a deficient number, since it is larger than the sum of its proper divisors (3461887).

71107913 is a wasteful number, since it uses less digits than its factorization.

71107913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33691.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 71107913 is about 8432.5508003213. The cubic root of 71107913 is about 414.2914565707.

The spelling of 71107913 in words is "seventy-one million, one hundred seven thousand, nine hundred thirteen".