71810485 has 16 divisors (see below), whose sum is σ = 90155520. Its totient is φ = 54806400.

The previous prime is 71810449. The next prime is 71810489. The reversal of 71810485 is 58401817.

It is not a de Polignac number, because 71810485 - 2²¹ = 69713333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71810485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71810489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68596 + ... + 69634.

It is an arithmetic number, because the mean of its divisors is an integer number (5634720).

Almost surely, 2^71810485 is an apocalyptic number.

It is an amenable number.

71810485 is a deficient number, since it is larger than the sum of its proper divisors (18345035).

71810485 is a wasteful number, since it uses less digits than its factorization.

71810485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 71810485 is about 8474.1067375860. The cubic root of 71810485 is about 415.6514373294.

The spelling of 71810485 in words is "seventy-one million, eight hundred ten thousand, four hundred eighty-five".