61588691 has 2 divisors, whose sum is σ = 61588692. Its totient is φ = 61588690.

The previous prime is 61588679. The next prime is 61588693. The reversal of 61588691 is 19688516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61588691 - 2¹⁰ = 61587667 is a prime.

Together with 61588693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61588693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30794345 + 30794346.

It is an arithmetic number, because the mean of its divisors is an integer number (30794346).

Almost surely, 2^61588691 is an apocalyptic number.

61588691 is a deficient number, since it is larger than the sum of its proper divisors (1).

61588691 is an equidigital number, since it uses as much as digits as its factorization.

61588691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 44.

The square root of 61588691 is about 7847.8462650590. The cubic root of 61588691 is about 394.9119944942.

The spelling of 61588691 in words is "sixty-one million, five hundred eighty-eight thousand, six hundred ninety-one".