69727661 has 2 divisors, whose sum is σ = 69727662. Its totient is φ = 69727660.

The previous prime is 69727643. The next prime is 69727681. The reversal of 69727661 is 16672796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59197636 + 10530025 = 7694^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 69727661 - 2⁶ = 69727597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69727631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34863830 + 34863831.

It is an arithmetic number, because the mean of its divisors is an integer number (34863831).

Almost surely, 2^69727661 is an apocalyptic number.

It is an amenable number.

69727661 is a deficient number, since it is larger than the sum of its proper divisors (1).

69727661 is an equidigital number, since it uses as much as digits as its factorization.

69727661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 69727661 is about 8350.3090361974. The cubic root of 69727661 is about 411.5933654849.

The spelling of 69727661 in words is "sixty-nine million, seven hundred twenty-seven thousand, six hundred sixty-one".