71913075 has 24 divisors (see below), whose sum is σ = 128043888. Its totient is φ = 35402880.

The previous prime is 71913067. The next prime is 71913091. The reversal of 71913075 is 57031917.

It is not a de Polignac number, because 71913075 - 2³ = 71913067 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 35904 + ... + 37853.

It is an arithmetic number, because the mean of its divisors is an integer number (5335162).

Almost surely, 2^71913075 is an apocalyptic number.

71913075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71913075 is a deficient number, since it is larger than the sum of its proper divisors (56130813).

71913075 is a wasteful number, since it uses less digits than its factorization.

71913075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73783 (or 73778 counting only the distinct ones).

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 71913075 is about 8480.1577225898. The cubic root of 71913075 is about 415.8492793334.

The spelling of 71913075 in words is "seventy-one million, nine hundred thirteen thousand, seventy-five".