670218077 has 2 divisors, whose sum is σ = 670218078. Its totient is φ = 670218076.

The previous prime is 670218071. The next prime is 670218083. The reversal of 670218077 is 770812076.

It is a balanced prime because it is at equal distance from previous prime (670218071) and next prime (670218083).

It can be written as a sum of positive squares in only one way, i.e., 402764761 + 267453316 = 20069^2 + 16354^2 .

It is a cyclic number.

It is not a de Polignac number, because 670218077 - 2¹⁸ = 669955933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670218077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670218071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335109038 + 335109039.

It is an arithmetic number, because the mean of its divisors is an integer number (335109039).

Almost surely, 2^670218077 is an apocalyptic number.

It is an amenable number.

670218077 is a deficient number, since it is larger than the sum of its proper divisors (1).

670218077 is an equidigital number, since it uses as much as digits as its factorization.

670218077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 670218077 is about 25888.5703931291. The cubic root of 670218077 is about 875.1289396924.

The spelling of 670218077 in words is "six hundred seventy million, two hundred eighteen thousand, seventy-seven".