670619569 has 2 divisors, whose sum is σ = 670619570. Its totient is φ = 670619568.

The previous prime is 670619567. The next prime is 670619597. The reversal of 670619569 is 965916076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480179569 + 190440000 = 21913^2 + 13800^2 .

It is a cyclic number.

It is not a de Polignac number, because 670619569 - 2¹ = 670619567 is a prime.

It is a super-2 number, since 2×670619569² = 899461212651491522, which contains 22 as substring.

Together with 670619567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (670619567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335309784 + 335309785.

It is an arithmetic number, because the mean of its divisors is an integer number (335309785).

Almost surely, 2^670619569 is an apocalyptic number.

It is an amenable number.

670619569 is a deficient number, since it is larger than the sum of its proper divisors (1).

670619569 is an equidigital number, since it uses as much as digits as its factorization.

670619569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 670619569 is about 25896.3234649245. The cubic root of 670619569 is about 875.3036525428.

The spelling of 670619569 in words is "six hundred seventy million, six hundred nineteen thousand, five hundred sixty-nine".