61744873 has 2 divisors, whose sum is σ = 61744874. Its totient is φ = 61744872.

The previous prime is 61744849. The next prime is 61744877. The reversal of 61744873 is 37844716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59397849 + 2347024 = 7707^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 61744873 - 2¹⁷ = 61613801 is a prime.

It is a super-4 number, since 4×61744873⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (61744877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30872436 + 30872437.

It is an arithmetic number, because the mean of its divisors is an integer number (30872437).

Almost surely, 2^61744873 is an apocalyptic number.

It is an amenable number.

61744873 is a deficient number, since it is larger than the sum of its proper divisors (1).

61744873 is an equidigital number, since it uses as much as digits as its factorization.

61744873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 40.

The square root of 61744873 is about 7857.7905927812. The cubic root of 61744873 is about 395.2455301979.

The spelling of 61744873 in words is "sixty-one million, seven hundred forty-four thousand, eight hundred seventy-three".