69000661 has 2 divisors, whose sum is σ = 69000662. Its totient is φ = 69000660.

The previous prime is 69000649. The next prime is 69000689. The reversal of 69000661 is 16600096.

It is a happy number.

It is an a-pointer prime, because the next prime (69000689) can be obtained adding 69000661 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 11025 = 8306^2 + 105^2 .

It is a cyclic number.

It is not a de Polignac number, because 69000661 - 2⁹ = 69000149 is a prime.

It is a super-2 number, since 2×69000661² = 9522182436873842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69000601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34500330 + 34500331.

It is an arithmetic number, because the mean of its divisors is an integer number (34500331).

Almost surely, 2^69000661 is an apocalyptic number.

It is an amenable number.

69000661 is a deficient number, since it is larger than the sum of its proper divisors (1).

69000661 is an equidigital number, since it uses as much as digits as its factorization.

69000661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 69000661 is about 8306.6636503472. The cubic root of 69000661 is about 410.1579026931.

The spelling of 69000661 in words is "sixty-nine million, six hundred sixty-one", and thus it is an aban number.