61397322 has 64 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 16255296.

The previous prime is 61397317. The next prime is 61397333. The reversal of 61397322 is 22379316.

It is a happy number.

61397322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61397322² = 7539262297543368, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 36688 + ... + 38324.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^61397322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61397322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

61397322 is an abundant number, since it is smaller than the sum of its proper divisors (89560758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61397322 is a wasteful number, since it uses less digits than its factorization.

61397322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its digits is 13608, while the sum is 33.

The square root of 61397322 is about 7835.6443257718. The cubic root of 61397322 is about 394.5025452792.

The spelling of 61397322 in words is "sixty-one million, three hundred ninety-seven thousand, three hundred twenty-two".