61444774 has 8 divisors (see below), whose sum is σ = 92840328. Its totient is φ = 30498000.

The previous prime is 61444771. The next prime is 61444777. The reversal of 61444774 is 47744416.

61444774 = 163² + 164² + ... + 573².

61444774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61444771) and next prime (61444777).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×61444774² = 7550920503822152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61444771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 111852 + ... + 112399.

It is an arithmetic number, because the mean of its divisors is an integer number (11605041).

Almost surely, 2^61444774 is an apocalyptic number.

61444774 is a deficient number, since it is larger than the sum of its proper divisors (31395554).

61444774 is a wasteful number, since it uses less digits than its factorization.

61444774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224390.

The product of its digits is 75264, while the sum is 37.

The square root of 61444774 is about 7838.6716987000. The cubic root of 61444774 is about 394.6041518508.

The spelling of 61444774 in words is "sixty-one million, four hundred forty-four thousand, seven hundred seventy-four".