71472917 has 2 divisors, whose sum is σ = 71472918. Its totient is φ = 71472916.

The previous prime is 71472911. The next prime is 71472941. The reversal of 71472917 is 71927417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60357361 + 11115556 = 7769^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 71472917 - 2⁴ = 71472901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71472911) 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 as a sum of consecutive naturals, namely, 35736458 + 35736459.

It is an arithmetic number, because the mean of its divisors is an integer number (35736459).

Almost surely, 2^71472917 is an apocalyptic number.

It is an amenable number.

71472917 is a deficient number, since it is larger than the sum of its proper divisors (1).

71472917 is an equidigital number, since it uses as much as digits as its factorization.

71472917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 38.

The square root of 71472917 is about 8454.1656596024. The cubic root of 71472917 is about 414.9991135608. Note that the first 3 decimals are identical.

The spelling of 71472917 in words is "seventy-one million, four hundred seventy-two thousand, nine hundred seventeen".