69789661 has 2 divisors, whose sum is σ = 69789662. Its totient is φ = 69789660.

The previous prime is 69789653. The next prime is 69789683. The reversal of 69789661 is 16698796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 14584761 = 7430^2 + 3819^2 .

It is a cyclic number.

It is not a de Polignac number, because 69789661 - 2³ = 69789653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69789599 and 69789608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69789691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34894830 + 34894831.

It is an arithmetic number, because the mean of its divisors is an integer number (34894831).

Almost surely, 2^69789661 is an apocalyptic number.

It is an amenable number.

69789661 is a deficient number, since it is larger than the sum of its proper divisors (1).

69789661 is an equidigital number, since it uses as much as digits as its factorization.

69789661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 69789661 is about 8354.0206487655. The cubic root of 69789661 is about 411.7153220059.

The spelling of 69789661 in words is "sixty-nine million, seven hundred eighty-nine thousand, six hundred sixty-one".