60961309 has 2 divisors, whose sum is σ = 60961310. Its totient is φ = 60961308.

The previous prime is 60961261. The next prime is 60961363. The reversal of 60961309 is 90316906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60793209 + 168100 = 7797^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 60961309 - 2⁷ = 60961181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60961379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30480654 + 30480655.

It is an arithmetic number, because the mean of its divisors is an integer number (30480655).

Almost surely, 2^60961309 is an apocalyptic number.

It is an amenable number.

60961309 is a deficient number, since it is larger than the sum of its proper divisors (1).

60961309 is an equidigital number, since it uses as much as digits as its factorization.

60961309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 60961309 is about 7807.7723455541. The cubic root of 60961309 is about 393.5664728318.

The spelling of 60961309 in words is "sixty million, nine hundred sixty-one thousand, three hundred nine".