670777573 has 2 divisors, whose sum is σ = 670777574. Its totient is φ = 670777572.

The previous prime is 670777567. The next prime is 670777621. The reversal of 670777573 is 375777076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614197089 + 56580484 = 24783^2 + 7522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670777573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670777553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335388786 + 335388787.

It is an arithmetic number, because the mean of its divisors is an integer number (335388787).

Almost surely, 2^670777573 is an apocalyptic number.

It is an amenable number.

670777573 is a deficient number, since it is larger than the sum of its proper divisors (1).

670777573 is an equidigital number, since it uses as much as digits as its factorization.

670777573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512630, while the sum is 49.

The square root of 670777573 is about 25899.3739885735. The cubic root of 670777573 is about 875.3723902815.

The spelling of 670777573 in words is "six hundred seventy million, seven hundred seventy-seven thousand, five hundred seventy-three".