60812809 has 2 divisors, whose sum is σ = 60812810. Its totient is φ = 60812808.

The previous prime is 60812789. The next prime is 60812813. The reversal of 60812809 is 90821806.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60793209 + 19600 = 7797^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 60812809 - 2⁵ = 60812777 is a prime.

It is not a weakly prime, because it can be changed into another prime (60812819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30406404 + 30406405.

It is an arithmetic number, because the mean of its divisors is an integer number (30406405).

Almost surely, 2^60812809 is an apocalyptic number.

It is an amenable number.

60812809 is a deficient number, since it is larger than the sum of its proper divisors (1).

60812809 is an equidigital number, since it uses as much as digits as its factorization.

60812809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 60812809 is about 7798.2567923864. The cubic root of 60812809 is about 393.2466407778.

The spelling of 60812809 in words is "sixty million, eight hundred twelve thousand, eight hundred nine".