71907265 has 4 divisors (see below), whose sum is σ = 86288724. Its totient is φ = 57525808.

The previous prime is 71907247. The next prime is 71907293. The reversal of 71907265 is 56270917.

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 51322896 + 20584369 = 7164^2 + 4537^2 .

It is a cyclic number.

It is not a de Polignac number, because 71907265 - 2¹¹ = 71905217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7190722 + ... + 7190731.

It is an arithmetic number, because the mean of its divisors is an integer number (21572181).

Almost surely, 2^71907265 is an apocalyptic number.

It is an amenable number.

71907265 is a deficient number, since it is larger than the sum of its proper divisors (14381459).

71907265 is a wasteful number, since it uses less digits than its factorization.

71907265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381458.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 71907265 is about 8479.8151512872. The cubic root of 71907265 is about 415.8380799357.

The spelling of 71907265 in words is "seventy-one million, nine hundred seven thousand, two hundred sixty-five".