674788069 has 2 divisors, whose sum is σ = 674788070. Its totient is φ = 674788068.

The previous prime is 674788027. The next prime is 674788111. The reversal of 674788069 is 960887476.

It is a balanced prime because it is at equal distance from previous prime (674788027) and next prime (674788111).

It can be written as a sum of positive squares in only one way, i.e., 572979969 + 101808100 = 23937^2 + 10090^2 .

It is a cyclic number.

It is not a de Polignac number, because 674788069 - 2⁷ = 674787941 is a prime.

It is a super-2 number, since 2×674788069² = 910677876129497522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674788019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337394034 + 337394035.

It is an arithmetic number, because the mean of its divisors is an integer number (337394035).

Almost surely, 2^674788069 is an apocalyptic number.

It is an amenable number.

674788069 is a deficient number, since it is larger than the sum of its proper divisors (1).

674788069 is an equidigital number, since it uses as much as digits as its factorization.

674788069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 674788069 is about 25976.6831793437. The cubic root of 674788069 is about 877.1135059276.

The spelling of 674788069 in words is "six hundred seventy-four million, seven hundred eighty-eight thousand, sixty-nine".