71961575 has 48 divisors (see below), whose sum is σ = 106588416. Its totient is φ = 47174400.

The previous prime is 71961541. The next prime is 71961577. The reversal of 71961575 is 57516917.

It is not a de Polignac number, because 71961575 - 2⁶ = 71961511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71961577) 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 47 ways as a sum of consecutive naturals, for example, 549260 + ... + 549390.

It is an arithmetic number, because the mean of its divisors is an integer number (2220592).

Almost surely, 2^71961575 is an apocalyptic number.

71961575 is a deficient number, since it is larger than the sum of its proper divisors (34626841).

71961575 is a wasteful number, since it uses less digits than its factorization.

71961575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 259 counting only the distinct ones).

The product of its digits is 66150, while the sum is 41.

The square root of 71961575 is about 8483.0168572272. The cubic root of 71961575 is about 415.9427447551.

The spelling of 71961575 in words is "seventy-one million, nine hundred sixty-one thousand, five hundred seventy-five".