71843265 has 48 divisors (see below), whose sum is σ = 135303168. Its totient is φ = 35054208.

The previous prime is 71843257. The next prime is 71843273. The reversal of 71843265 is 56234817.

It is an interprime number because it is at equal distance from previous prime (71843257) and next prime (71843273).

It is not a de Polignac number, because 71843265 - 2³ = 71843257 is a prime.

It is a super-2 number, since 2×71843265² = 10322909451720450, which contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 73812 + ... + 74778.

It is an arithmetic number, because the mean of its divisors is an integer number (2818816).

Almost surely, 2^71843265 is an apocalyptic number.

It is an amenable number.

71843265 is a deficient number, since it is larger than the sum of its proper divisors (63459903).

71843265 is a wasteful number, since it uses less digits than its factorization.

71843265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1115 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 71843265 is about 8476.0406440743. The cubic root of 71843265 is about 415.7146731343.

The spelling of 71843265 in words is "seventy-one million, eight hundred forty-three thousand, two hundred sixty-five".