61586089 has 2 divisors, whose sum is σ = 61586090. Its totient is φ = 61586088.

The previous prime is 61586071. The next prime is 61586099. The reversal of 61586089 is 98068516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 4840000 = 7533^2 + 2200^2 .

It is a cyclic number.

It is not a de Polignac number, because 61586089 - 2⁷ = 61585961 is a prime.

It is not a weakly prime, because it can be changed into another prime (61586099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30793044 + 30793045.

It is an arithmetic number, because the mean of its divisors is an integer number (30793045).

Almost surely, 2^61586089 is an apocalyptic number.

It is an amenable number.

61586089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61586089 is an equidigital number, since it uses as much as digits as its factorization.

61586089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 61586089 is about 7847.6804853409. The cubic root of 61586089 is about 394.9064329998.

The spelling of 61586089 in words is "sixty-one million, five hundred eighty-six thousand, eighty-nine".