71403645 has 8 divisors (see below), whose sum is σ = 114245856. Its totient is φ = 38081936.

The previous prime is 71403643. The next prime is 71403677. The reversal of 71403645 is 54630417.

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 71403645 - 2¹ = 71403643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71403643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380107 + ... + 2380136.

It is an arithmetic number, because the mean of its divisors is an integer number (14280732).

Almost surely, 2^71403645 is an apocalyptic number.

It is an amenable number.

71403645 is a deficient number, since it is larger than the sum of its proper divisors (42842211).

71403645 is a wasteful number, since it uses less digits than its factorization.

71403645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760251.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 71403645 is about 8450.0677512077. The cubic root of 71403645 is about 414.8649969736.

The spelling of 71403645 in words is "seventy-one million, four hundred three thousand, six hundred forty-five".