670351777 has 2 divisors, whose sum is σ = 670351778. Its totient is φ = 670351776.

The previous prime is 670351751. The next prime is 670351789. The reversal of 670351777 is 777153076.

670351777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376709281 + 293642496 = 19409^2 + 17136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670351777 is a prime.

It is not a weakly prime, because it can be changed into another prime (670351277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335175888 + 335175889.

It is an arithmetic number, because the mean of its divisors is an integer number (335175889).

Almost surely, 2^670351777 is an apocalyptic number.

It is an amenable number.

670351777 is a deficient number, since it is larger than the sum of its proper divisors (1).

670351777 is an equidigital number, since it uses as much as digits as its factorization.

670351777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216090, while the sum is 43.

The square root of 670351777 is about 25891.1524849706. The cubic root of 670351777 is about 875.1871281954.

The spelling of 670351777 in words is "six hundred seventy million, three hundred fifty-one thousand, seven hundred seventy-seven".