61663274 has 8 divisors (see below), whose sum is σ = 94240260. Its totient is φ = 30249856.

The previous prime is 61663237. The next prime is 61663279. The reversal of 61663274 is 47236616.

61663274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 60949249 + 714025 = 7807^2 + 845^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61663279) 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, 290759 + ... + 290970.

Almost surely, 2^61663274 is an apocalyptic number.

61663274 is a deficient number, since it is larger than the sum of its proper divisors (32576986).

61663274 is a wasteful number, since it uses less digits than its factorization.

61663274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581784.

The product of its digits is 36288, while the sum is 35.

The square root of 61663274 is about 7852.5966406024. The cubic root of 61663274 is about 395.0713410640.

The spelling of 61663274 in words is "sixty-one million, six hundred sixty-three thousand, two hundred seventy-four".