61144744 has 32 divisors (see below), whose sum is σ = 118039680. Its totient is φ = 29678464.

The previous prime is 61144739. The next prime is 61144747. The reversal of 61144744 is 44744116.

It is not an unprimeable number, because it can be changed into a prime (61144747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50919 + ... + 52105.

It is an arithmetic number, because the mean of its divisors is an integer number (3688740).

Almost surely, 2^61144744 is an apocalyptic number.

It is an amenable number.

61144744 is a deficient number, since it is larger than the sum of its proper divisors (56894936).

61144744 is a wasteful number, since it uses less digits than its factorization.

61144744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1373 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 61144744 is about 7819.5104706113. The cubic root of 61144744 is about 393.9608299332.

The spelling of 61144744 in words is "sixty-one million, one hundred forty-four thousand, seven hundred forty-four".