30689669 has 2 divisors, whose sum is σ = 30689670. Its totient is φ = 30689668.

The previous prime is 30689657. The next prime is 30689717. The reversal of 30689669 is 96698603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 10484644 = 4495^2 + 3238^2 .

It is a cyclic number.

It is not a de Polignac number, because 30689669 - 2⁴ = 30689653 is a prime.

It is a super-2 number, since 2×30689669² = 1883711566659122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30689609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15344834 + 15344835.

It is an arithmetic number, because the mean of its divisors is an integer number (15344835).

Almost surely, 2^30689669 is an apocalyptic number.

It is an amenable number.

30689669 is a deficient number, since it is larger than the sum of its proper divisors (1).

30689669 is an equidigital number, since it uses as much as digits as its factorization.

30689669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 30689669 is about 5539.8257192803. The cubic root of 30689669 is about 313.0863028288.

The spelling of 30689669 in words is "thirty million, six hundred eighty-nine thousand, six hundred sixty-nine".