971678087 has 2 divisors, whose sum is σ = 971678088. Its totient is φ = 971678086.

The previous prime is 971678083. The next prime is 971678159. The reversal of 971678087 is 780876179.

It is a weak prime.

It is an emirp because it is prime and its reverse (780876179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971678087 - 2² = 971678083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971678083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485839043 + 485839044.

It is an arithmetic number, because the mean of its divisors is an integer number (485839044).

Almost surely, 2^971678087 is an apocalyptic number.

971678087 is a deficient number, since it is larger than the sum of its proper divisors (1).

971678087 is an equidigital number, since it uses as much as digits as its factorization.

971678087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The square root of 971678087 is about 31171.7514265721. The cubic root of 971678087 is about 990.4688073154.

The spelling of 971678087 in words is "nine hundred seventy-one million, six hundred seventy-eight thousand, eighty-seven".