61306744 has 8 divisors (see below), whose sum is σ = 114950160. Its totient is φ = 30653368.

The previous prime is 61306741. The next prime is 61306757. The reversal of 61306744 is 44760316.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61306741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3831664 + ... + 3831679.

It is an arithmetic number, because the mean of its divisors is an integer number (14368770).

Almost surely, 2^61306744 is an apocalyptic number.

It is an amenable number.

61306744 is a deficient number, since it is larger than the sum of its proper divisors (53643416).

61306744 is a wasteful number, since it uses less digits than its factorization.

61306744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663349 (or 7663345 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 61306744 is about 7829.8623231830. The cubic root of 61306744 is about 394.3084497447.

The spelling of 61306744 in words is "sixty-one million, three hundred six thousand, seven hundred forty-four".