61560377 has 2 divisors, whose sum is σ = 61560378. Its totient is φ = 61560376.

The previous prime is 61560283. The next prime is 61560419. The reversal of 61560377 is 77306516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 32041 = 7844^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 61560377 - 2¹⁶ = 61494841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61560277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780188 + 30780189.

It is an arithmetic number, because the mean of its divisors is an integer number (30780189).

Almost surely, 2^61560377 is an apocalyptic number.

It is an amenable number.

61560377 is a deficient number, since it is larger than the sum of its proper divisors (1).

61560377 is an equidigital number, since it uses as much as digits as its factorization.

61560377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 61560377 is about 7846.0421232619. The cubic root of 61560377 is about 394.8514679487.

The spelling of 61560377 in words is "sixty-one million, five hundred sixty thousand, three hundred seventy-seven".