70000669 has 2 divisors, whose sum is σ = 70000670. Its totient is φ = 70000668.

The previous prime is 70000663. The next prime is 70000687. The reversal of 70000669 is 96600007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52736644 + 17264025 = 7262^2 + 4155^2 .

It is a cyclic number.

It is not a de Polignac number, because 70000669 - 2⁹ = 70000157 is a prime.

It is a super-2 number, since 2×70000669² = 9800187320895122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70000663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35000334 + 35000335.

It is an arithmetic number, because the mean of its divisors is an integer number (35000335).

Almost surely, 2^70000669 is an apocalyptic number.

It is an amenable number.

70000669 is a deficient number, since it is larger than the sum of its proper divisors (1).

70000669 is an equidigital number, since it uses as much as digits as its factorization.

70000669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 70000669 is about 8366.6402456422. The cubic root of 70000669 is about 412.1298429004.

The spelling of 70000669 in words is "seventy million, six hundred sixty-nine", and thus it is an aban number.