71326345 has 4 divisors (see below), whose sum is σ = 85591620. Its totient is φ = 57061072.

The previous prime is 71326337. The next prime is 71326349. The reversal of 71326345 is 54362317.

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 39200121 + 32126224 = 6261^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 71326345 - 2³ = 71326337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71326349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132630 + ... + 7132639.

It is an arithmetic number, because the mean of its divisors is an integer number (21397905).

Almost surely, 2^71326345 is an apocalyptic number.

It is an amenable number.

71326345 is a deficient number, since it is larger than the sum of its proper divisors (14265275).

71326345 is a wasteful number, since it uses less digits than its factorization.

71326345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265274.

The product of its digits is 15120, while the sum is 31.

The square root of 71326345 is about 8445.4925848052. The cubic root of 71326345 is about 414.7152350408.

The spelling of 71326345 in words is "seventy-one million, three hundred twenty-six thousand, three hundred forty-five".