61170643 has 2 divisors, whose sum is σ = 61170644. Its totient is φ = 61170642.

The previous prime is 61170631. The next prime is 61170649. The reversal of 61170643 is 34607116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61170643 - 2⁵ = 61170611 is a prime.

It is not a weakly prime, because it can be changed into another prime (61170649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30585321 + 30585322.

It is an arithmetic number, because the mean of its divisors is an integer number (30585322).

Almost surely, 2^61170643 is an apocalyptic number.

61170643 is a deficient number, since it is larger than the sum of its proper divisors (1).

61170643 is an equidigital number, since it uses as much as digits as its factorization.

61170643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61170643 is about 7821.1663452454. The cubic root of 61170643 is about 394.0164452411.

Adding to 61170643 its reverse (34607116), we get a palindrome (95777759).

The spelling of 61170643 in words is "sixty-one million, one hundred seventy thousand, six hundred forty-three".