85680967 has 2 divisors, whose sum is σ = 85680968. Its totient is φ = 85680966.

The previous prime is 85680961. The next prime is 85680971. The reversal of 85680967 is 76908658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85680967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85680967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85680961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42840483 + 42840484.

It is an arithmetic number, because the mean of its divisors is an integer number (42840484).

Almost surely, 2^85680967 is an apocalyptic number.

85680967 is a deficient number, since it is larger than the sum of its proper divisors (1).

85680967 is an equidigital number, since it uses as much as digits as its factorization.

85680967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 85680967 is about 9256.4014065942. The cubic root of 85680967 is about 440.8540008233.

The spelling of 85680967 in words is "eighty-five million, six hundred eighty thousand, nine hundred sixty-seven".