61801744 has 10 divisors (see below), whose sum is σ = 119740910. Its totient is φ = 30900864.

The previous prime is 61801721. The next prime is 61801777. The reversal of 61801744 is 44710816.

It can be written as a sum of positive squares in only one way, i.e., 61027344 + 774400 = 7812^2 + 880^2 .

It is a super-2 number, since 2×61801744² = 7638911122883072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1931289 + ... + 1931320.

It is an arithmetic number, because the mean of its divisors is an integer number (11974091).

Almost surely, 2^61801744 is an apocalyptic number.

It is an amenable number.

61801744 is a deficient number, since it is larger than the sum of its proper divisors (57939166).

61801744 is a wasteful number, since it uses less digits than its factorization.

61801744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862617 (or 3862611 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 61801744 is about 7861.4085251945. The cubic root of 61801744 is about 395.3668418132.

The spelling of 61801744 in words is "sixty-one million, eight hundred one thousand, seven hundred forty-four".