678094871 has 2 divisors, whose sum is σ = 678094872. Its totient is φ = 678094870.

The previous prime is 678094867. The next prime is 678094889. The reversal of 678094871 is 178490876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678094871 - 2² = 678094867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678094891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339047435 + 339047436.

It is an arithmetic number, because the mean of its divisors is an integer number (339047436).

Almost surely, 2^678094871 is an apocalyptic number.

678094871 is a deficient number, since it is larger than the sum of its proper divisors (1).

678094871 is an equidigital number, since it uses as much as digits as its factorization.

678094871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 678094871 is about 26040.2548182617. The cubic root of 678094871 is about 878.5439380940.

The spelling of 678094871 in words is "six hundred seventy-eight million, ninety-four thousand, eight hundred seventy-one".