69199561 has 2 divisors, whose sum is σ = 69199562. Its totient is φ = 69199560.

The previous prime is 69199553. The next prime is 69199567. The reversal of 69199561 is 16599196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61465600 + 7733961 = 7840^2 + 2781^2 .

It is a cyclic number.

It is not a de Polignac number, because 69199561 - 2³ = 69199553 is a prime.

It is not a weakly prime, because it can be changed into another prime (69199567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34599780 + 34599781.

It is an arithmetic number, because the mean of its divisors is an integer number (34599781).

Almost surely, 2^69199561 is an apocalyptic number.

It is an amenable number.

69199561 is a deficient number, since it is larger than the sum of its proper divisors (1).

69199561 is an equidigital number, since it uses as much as digits as its factorization.

69199561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 46.

The square root of 69199561 is about 8318.6273507112. The cubic root of 69199561 is about 410.5516290893.

The spelling of 69199561 in words is "sixty-nine million, one hundred ninety-nine thousand, five hundred sixty-one".