61416644 has 6 divisors (see below), whose sum is σ = 107479134. Its totient is φ = 30708320.

The previous prime is 61416637. The next prime is 61416659. The reversal of 61416644 is 44661416.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 5466244 = 7480^2 + 2338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61416644.

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, 7677077 + ... + 7677084.

It is an arithmetic number, because the mean of its divisors is an integer number (17913189).

Almost surely, 2^61416644 is an apocalyptic number.

It is an amenable number.

61416644 is a deficient number, since it is larger than the sum of its proper divisors (46062490).

61416644 is a wasteful number, since it uses less digits than its factorization.

61416644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354165 (or 15354163 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 61416644 is about 7836.8771841850. The cubic root of 61416644 is about 394.5439248186.

It can be divided in two parts, 6141 and 6644, that multiplied together give a palindrome (40800804).

The spelling of 61416644 in words is "sixty-one million, four hundred sixteen thousand, six hundred forty-four".