61646722 has 8 divisors (see below), whose sum is σ = 93986172. Its totient is φ = 30318000.

The previous prime is 61646707. The next prime is 61646723. The reversal of 61646722 is 22764616.

61646722 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 55190041 + 6456681 = 7429^2 + 2541^2 .

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 (61646723) 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, 252529 + ... + 252772.

Almost surely, 2^61646722 is an apocalyptic number.

61646722 is a deficient number, since it is larger than the sum of its proper divisors (32339450).

61646722 is a wasteful number, since it uses less digits than its factorization.

61646722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505364.

The product of its digits is 24192, while the sum is 34.

The square root of 61646722 is about 7851.5426509699. The cubic root of 61646722 is about 395.0359888162.

The spelling of 61646722 in words is "sixty-one million, six hundred forty-six thousand, seven hundred twenty-two".