61589617 has 2 divisors, whose sum is σ = 61589618. Its totient is φ = 61589616.

The previous prime is 61589609. The next prime is 61589629. The reversal of 61589617 is 71698516.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58736896 + 2852721 = 7664^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 61589617 - 2³ = 61589609 is a prime.

It is not a weakly prime, because it can be changed into another prime (61589117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30794808 + 30794809.

It is an arithmetic number, because the mean of its divisors is an integer number (30794809).

Almost surely, 2^61589617 is an apocalyptic number.

It is an amenable number.

61589617 is a deficient number, since it is larger than the sum of its proper divisors (1).

61589617 is an equidigital number, since it uses as much as digits as its factorization.

61589617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 61589617 is about 7847.9052619154. The cubic root of 61589617 is about 394.9139736816.

The spelling of 61589617 in words is "sixty-one million, five hundred eighty-nine thousand, six hundred seventeen".