61849745 has 16 divisors (see below), whose sum is σ = 75427200. Its totient is φ = 48681984.

The previous prime is 61849729. The next prime is 61849813. The reversal of 61849745 is 54794816.

61849745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61849745 - 2⁴ = 61849729 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61849696 and 61849705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102956 + ... + 103554.

It is an arithmetic number, because the mean of its divisors is an integer number (4714200).

Almost surely, 2^61849745 is an apocalyptic number.

It is an amenable number.

61849745 is a deficient number, since it is larger than the sum of its proper divisors (13577455).

61849745 is a wasteful number, since it uses less digits than its factorization.

61849745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its digits is 241920, while the sum is 44.

The square root of 61849745 is about 7864.4608842565. The cubic root of 61849745 is about 395.4691749153.

The spelling of 61849745 in words is "sixty-one million, eight hundred forty-nine thousand, seven hundred forty-five".