61866593 has 2 divisors, whose sum is σ = 61866594. Its totient is φ = 61866592.

The previous prime is 61866589. The next prime is 61866601. The reversal of 61866593 is 39566816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 1151329 = 7792^2 + 1073^2 .

It is a cyclic number.

It is not a de Polignac number, because 61866593 - 2² = 61866589 is a prime.

It is not a weakly prime, because it can be changed into another prime (61866533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30933296 + 30933297.

It is an arithmetic number, because the mean of its divisors is an integer number (30933297).

Almost surely, 2^61866593 is an apocalyptic number.

It is an amenable number.

61866593 is a deficient number, since it is larger than the sum of its proper divisors (1).

61866593 is an equidigital number, since it uses as much as digits as its factorization.

61866593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 61866593 is about 7865.5319591239. The cubic root of 61866593 is about 395.5050805323.

The spelling of 61866593 in words is "sixty-one million, eight hundred sixty-six thousand, five hundred ninety-three".