71715470 has 16 divisors (see below), whose sum is σ = 129446208. Its totient is φ = 28606560.

The previous prime is 71715461. The next prime is 71715473. The reversal of 71715470 is 7451717.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71715473) 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, 6101 + ... + 13440.

It is an arithmetic number, because the mean of its divisors is an integer number (8090388).

Almost surely, 2^71715470 is an apocalyptic number.

71715470 is a deficient number, since it is larger than the sum of its proper divisors (57730738).

71715470 is a wasteful number, since it uses less digits than its factorization.

71715470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 71715470 is about 8468.4986863080. The cubic root of 71715470 is about 415.4680353634.

The spelling of 71715470 in words is "seventy-one million, seven hundred fifteen thousand, four hundred seventy".