71383345 has 12 divisors (see below), whose sum is σ = 94156020. Its totient is φ = 51914720.

The previous prime is 71383339. The next prime is 71383349. The reversal of 71383345 is 54338317.

It can be written as a sum of positive squares in 2 ways, for example, as 24720784 + 46662561 = 4972^2 + 6831^2 .

It is not a de Polignac number, because 71383345 - 2⁵ = 71383313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71383345.

It is not an unprimeable number, because it can be changed into a prime (71383349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58390 + ... + 59599.

It is an arithmetic number, because the mean of its divisors is an integer number (7846335).

Almost surely, 2^71383345 is an apocalyptic number.

It is an amenable number.

71383345 is a deficient number, since it is larger than the sum of its proper divisors (22772675).

71383345 is a wasteful number, since it uses less digits than its factorization.

71383345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118016 (or 118005 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 71383345 is about 8448.8664920213. The cubic root of 71383345 is about 414.8256779833.

The spelling of 71383345 in words is "seventy-one million, three hundred eighty-three thousand, three hundred forty-five".