60661157 has 2 divisors, whose sum is σ = 60661158. Its totient is φ = 60661156.

The previous prime is 60661147. The next prime is 60661171. The reversal of 60661157 is 75116606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55860676 + 4800481 = 7474^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 60661157 - 2¹⁰ = 60660133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60661147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30330578 + 30330579.

It is an arithmetic number, because the mean of its divisors is an integer number (30330579).

Almost surely, 2^60661157 is an apocalyptic number.

It is an amenable number.

60661157 is a deficient number, since it is larger than the sum of its proper divisors (1).

60661157 is an equidigital number, since it uses as much as digits as its factorization.

60661157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 60661157 is about 7788.5272677188. The cubic root of 60661157 is about 392.9194822821.

The spelling of 60661157 in words is "sixty million, six hundred sixty-one thousand, one hundred fifty-seven".