71306645 has 8 divisors (see below), whose sum is σ = 85625856. Its totient is φ = 57006736.

The previous prime is 71306629. The next prime is 71306663. The reversal of 71306645 is 54660317.

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

It is a cyclic number.

It is not a de Polignac number, because 71306645 - 2⁴ = 71306629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5204 + ... + 13026.

It is an arithmetic number, because the mean of its divisors is an integer number (10703232).

Almost surely, 2^71306645 is an apocalyptic number.

It is an amenable number.

71306645 is a deficient number, since it is larger than the sum of its proper divisors (14319211).

71306645 is a wasteful number, since it uses less digits than its factorization.

71306645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 71306645 is about 8444.3262016575. The cubic root of 71306645 is about 414.6770507280.

The spelling of 71306645 in words is "seventy-one million, three hundred six thousand, six hundred forty-five".