71780675 has 6 divisors (see below), whose sum is σ = 89008068. Its totient is φ = 57424520.

The previous prime is 71780659. The next prime is 71780699. The reversal of 71780675 is 57608717.

It is not a de Polignac number, because 71780675 - 2⁴ = 71780659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1435589 + ... + 1435638.

It is an arithmetic number, because the mean of its divisors is an integer number (14834678).

Almost surely, 2^71780675 is an apocalyptic number.

71780675 is a deficient number, since it is larger than the sum of its proper divisors (17227393).

71780675 is a wasteful number, since it uses less digits than its factorization.

71780675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871237 (or 2871232 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 71780675 is about 8472.3476675594. The cubic root of 71780675 is about 415.5939142334.

The spelling of 71780675 in words is "seventy-one million, seven hundred eighty thousand, six hundred seventy-five".