71937265 has 4 divisors (see below), whose sum is σ = 86324724. Its totient is φ = 57549808.

The previous prime is 71937259. The next prime is 71937293. The reversal of 71937265 is 56273917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 56445169 = 3936^2 + 7513^2 .

It is a cyclic number.

It is not a de Polignac number, because 71937265 - 2⁵ = 71937233 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 7193722 + ... + 7193731.

It is an arithmetic number, because the mean of its divisors is an integer number (21581181).

Almost surely, 2^71937265 is an apocalyptic number.

It is an amenable number.

71937265 is a deficient number, since it is larger than the sum of its proper divisors (14387459).

71937265 is a wasteful number, since it uses less digits than its factorization.

71937265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387458.

The product of its digits is 79380, while the sum is 40.

The square root of 71937265 is about 8481.5838733105. The cubic root of 71937265 is about 415.8959016681.

The spelling of 71937265 in words is "seventy-one million, nine hundred thirty-seven thousand, two hundred sixty-five".