91470671 has 2 divisors, whose sum is σ = 91470672. Its totient is φ = 91470670.

The previous prime is 91470647. The next prime is 91470683. The reversal of 91470671 is 17607419.

It is a strong prime.

It is an emirp because it is prime and its reverse (17607419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91470671 - 2¹⁴ = 91454287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91470641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45735335 + 45735336.

It is an arithmetic number, because the mean of its divisors is an integer number (45735336).

Almost surely, 2^91470671 is an apocalyptic number.

91470671 is a deficient number, since it is larger than the sum of its proper divisors (1).

91470671 is an equidigital number, since it uses as much as digits as its factorization.

91470671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 91470671 is about 9564.0300605968. The cubic root of 91470671 is about 450.5682877903.

The spelling of 91470671 in words is "ninety-one million, four hundred seventy thousand, six hundred seventy-one".