71613850 has 144 divisors (see below), whose sum is σ = 178113600. Its totient is φ = 20908800.

The previous prime is 71613827. The next prime is 71613851. The reversal of 71613850 is 5831617.

It is not an unprimeable number, because it can be changed into a prime (71613851) 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 71 ways as a sum of consecutive naturals, for example, 804606 + ... + 804694.

It is an arithmetic number, because the mean of its divisors is an integer number (1236900).

Almost surely, 2^71613850 is an apocalyptic number.

71613850 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71613850 is an abundant number, since it is smaller than the sum of its proper divisors (106499750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71613850 is a wasteful number, since it uses less digits than its factorization.

71613850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71613850 is about 8462.4966765134. The cubic root of 71613850 is about 415.2717047848.

It can be divided in two parts, 7161 and 3850, that added together give a palindrome (11011).

The spelling of 71613850 in words is "seventy-one million, six hundred thirteen thousand, eight hundred fifty".