71707481 has 2 divisors, whose sum is σ = 71707482. Its totient is φ = 71707480.

The previous prime is 71707469. The next prime is 71707507. The reversal of 71707481 is 18470717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64947481 + 6760000 = 8059^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 71707481 - 2⁶ = 71707417 is a prime.

It is a super-2 number, since 2×71707481² = 10283925662730722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71707421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35853740 + 35853741.

It is an arithmetic number, because the mean of its divisors is an integer number (35853741).

Almost surely, 2^71707481 is an apocalyptic number.

It is an amenable number.

71707481 is a deficient number, since it is larger than the sum of its proper divisors (1).

71707481 is an equidigital number, since it uses as much as digits as its factorization.

71707481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10976, while the sum is 35.

The square root of 71707481 is about 8468.0269838965. The cubic root of 71707481 is about 415.4526072770.

The spelling of 71707481 in words is "seventy-one million, seven hundred seven thousand, four hundred eighty-one".