61744849 has 2 divisors, whose sum is σ = 61744850. Its totient is φ = 61744848.

The previous prime is 61744843. The next prime is 61744873. The reversal of 61744849 is 94844716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 8162449 = 7320^2 + 2857^2 .

It is a cyclic number.

It is not a de Polignac number, because 61744849 - 2⁵ = 61744817 is a prime.

It is not a weakly prime, because it can be changed into another prime (61744843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30872424 + 30872425.

It is an arithmetic number, because the mean of its divisors is an integer number (30872425).

Almost surely, 2^61744849 is an apocalyptic number.

It is an amenable number.

61744849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61744849 is an equidigital number, since it uses as much as digits as its factorization.

61744849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 61744849 is about 7857.7890656342. The cubic root of 61744849 is about 395.2454789877.

The spelling of 61744849 in words is "sixty-one million, seven hundred forty-four thousand, eight hundred forty-nine".