87070471 has 2 divisors, whose sum is σ = 87070472. Its totient is φ = 87070470.

The previous prime is 87070457. The next prime is 87070519. The reversal of 87070471 is 17407078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87070471 - 2⁵ = 87070439 is a prime.

It is a super-3 number, since 3×87070471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87070411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535235 + 43535236.

It is an arithmetic number, because the mean of its divisors is an integer number (43535236).

Almost surely, 2^87070471 is an apocalyptic number.

87070471 is a deficient number, since it is larger than the sum of its proper divisors (1).

87070471 is an equidigital number, since it uses as much as digits as its factorization.

87070471 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 34.

The square root of 87070471 is about 9331.1559305372. The cubic root of 87070471 is about 443.2243698641.

The spelling of 87070471 in words is "eighty-seven million, seventy thousand, four hundred seventy-one".