670763449 has 2 divisors, whose sum is σ = 670763450. Its totient is φ = 670763448.

The previous prime is 670763413. The next prime is 670763453. The reversal of 670763449 is 944367076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573937849 + 96825600 = 23957^2 + 9840^2 .

It is a cyclic number.

It is not a de Polignac number, because 670763449 - 2¹⁷ = 670632377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670763399 and 670763408.

It is not a weakly prime, because it can be changed into another prime (670763459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335381724 + 335381725.

It is an arithmetic number, because the mean of its divisors is an integer number (335381725).

Almost surely, 2^670763449 is an apocalyptic number.

It is an amenable number.

670763449 is a deficient number, since it is larger than the sum of its proper divisors (1).

670763449 is an equidigital number, since it uses as much as digits as its factorization.

670763449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 46.

The square root of 670763449 is about 25899.1013164550. The cubic root of 670763449 is about 875.3662462446.

The spelling of 670763449 in words is "six hundred seventy million, seven hundred sixty-three thousand, four hundred forty-nine".