91683071 has 2 divisors, whose sum is σ = 91683072. Its totient is φ = 91683070.

The previous prime is 91683049. The next prime is 91683073. The reversal of 91683071 is 17038619.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91683071 is a prime.

Together with 91683073, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_5308991 and since 91683071 and 5308991 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91683073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45841535 + 45841536.

It is an arithmetic number, because the mean of its divisors is an integer number (45841536).

Almost surely, 2^91683071 is an apocalyptic number.

91683071 is a deficient number, since it is larger than the sum of its proper divisors (1).

91683071 is an equidigital number, since it uses as much as digits as its factorization.

91683071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 91683071 is about 9575.1277276076. The cubic root of 91683071 is about 450.9167664322.

The spelling of 91683071 in words is "ninety-one million, six hundred eighty-three thousand, seventy-one".