678470971 has 2 divisors, whose sum is σ = 678470972. Its totient is φ = 678470970.

The previous prime is 678470963. The next prime is 678470977. The reversal of 678470971 is 179074876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678470971 - 2³ = 678470963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (678470977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339235485 + 339235486.

It is an arithmetic number, because the mean of its divisors is an integer number (339235486).

Almost surely, 2^678470971 is an apocalyptic number.

678470971 is a deficient number, since it is larger than the sum of its proper divisors (1).

678470971 is an equidigital number, since it uses as much as digits as its factorization.

678470971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 678470971 is about 26047.4753287147. The cubic root of 678470971 is about 878.7063339080.

The spelling of 678470971 in words is "six hundred seventy-eight million, four hundred seventy thousand, nine hundred seventy-one".