71935945 has 8 divisors (see below), whose sum is σ = 86374080. Its totient is φ = 57514800.

The previous prime is 71935943. The next prime is 71935949. The reversal of 71935945 is 54953917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71935945 - 2¹ = 71935943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71935943) 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 7 ways as a sum of consecutive naturals, for example, 8620 + ... + 14770.

It is an arithmetic number, because the mean of its divisors is an integer number (10796760).

Almost surely, 2^71935945 is an apocalyptic number.

It is an amenable number.

71935945 is a deficient number, since it is larger than the sum of its proper divisors (14438135).

71935945 is a wasteful number, since it uses less digits than its factorization.

71935945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8495.

The product of its digits is 170100, while the sum is 43.

The square root of 71935945 is about 8481.5060572990. The cubic root of 71935945 is about 415.8933578500.

It can be divided in two parts, 719 and 35945, that multiplied together give a triangular number (25844455 = T₇₁₈₉).

The spelling of 71935945 in words is "seventy-one million, nine hundred thirty-five thousand, nine hundred forty-five".