86750971 has 2 divisors, whose sum is σ = 86750972. Its totient is φ = 86750970.

The previous prime is 86750899. The next prime is 86751011. The reversal of 86750971 is 17905768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86750971 - 2²³ = 78362363 is a prime.

It is not a weakly prime, because it can be changed into another prime (86750071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43375485 + 43375486.

It is an arithmetic number, because the mean of its divisors is an integer number (43375486).

Almost surely, 2^86750971 is an apocalyptic number.

86750971 is a deficient number, since it is larger than the sum of its proper divisors (1).

86750971 is an equidigital number, since it uses as much as digits as its factorization.

86750971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 86750971 is about 9314.0201309639. The cubic root of 86750971 is about 442.6815767733.

The spelling of 86750971 in words is "eighty-six million, seven hundred fifty thousand, nine hundred seventy-one".