58861661 has 2 divisors, whose sum is σ = 58861662. Its totient is φ = 58861660.

The previous prime is 58861657. The next prime is 58861679. The reversal of 58861661 is 16616885.

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., 58828900 + 32761 = 7670^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 58861661 - 2² = 58861657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58861681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29430830 + 29430831.

It is an arithmetic number, because the mean of its divisors is an integer number (29430831).

Almost surely, 2^58861661 is an apocalyptic number.

It is an amenable number.

58861661 is a deficient number, since it is larger than the sum of its proper divisors (1).

58861661 is an equidigital number, since it uses as much as digits as its factorization.

58861661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 58861661 is about 7672.1353611625. The cubic root of 58861661 is about 388.9951361067.

The spelling of 58861661 in words is "fifty-eight million, eight hundred sixty-one thousand, six hundred sixty-one".