670578841 has 2 divisors, whose sum is σ = 670578842. Its totient is φ = 670578840.

The previous prime is 670578833. The next prime is 670578847. The reversal of 670578841 is 148875076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519657616 + 150921225 = 22796^2 + 12285^2 .

It is a cyclic number.

It is not a de Polignac number, because 670578841 - 2³ = 670578833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670578791 and 670578800.

It is not a weakly prime, because it can be changed into another prime (670578847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335289420 + 335289421.

It is an arithmetic number, because the mean of its divisors is an integer number (335289421).

Almost surely, 2^670578841 is an apocalyptic number.

It is an amenable number.

670578841 is a deficient number, since it is larger than the sum of its proper divisors (1).

670578841 is an equidigital number, since it uses as much as digits as its factorization.

670578841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 670578841 is about 25895.5370865329. The cubic root of 670578841 is about 875.2859325664.

The spelling of 670578841 in words is "six hundred seventy million, five hundred seventy-eight thousand, eight hundred forty-one".