61816793 has 2 divisors, whose sum is σ = 61816794. Its totient is φ = 61816792.

The previous prime is 61816787. The next prime is 61816817. The reversal of 61816793 is 39761816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60964864 + 851929 = 7808^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 61816793 - 2¹⁶ = 61751257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61816793.

It is not a weakly prime, because it can be changed into another prime (61816723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30908396 + 30908397.

It is an arithmetic number, because the mean of its divisors is an integer number (30908397).

Almost surely, 2^61816793 is an apocalyptic number.

It is an amenable number.

61816793 is a deficient number, since it is larger than the sum of its proper divisors (1).

61816793 is an equidigital number, since it uses as much as digits as its factorization.

61816793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 61816793 is about 7862.3656109342. The cubic root of 61816793 is about 395.3989304046.

The spelling of 61816793 in words is "sixty-one million, eight hundred sixteen thousand, seven hundred ninety-three".