61021896 has 64 divisors (see below), whose sum is σ = 165654720. Its totient is φ = 18620160.

The previous prime is 61021889. The next prime is 61021897. The reversal of 61021896 is 69812016.

61021896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61021897) 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 15 ways as a sum of consecutive naturals, for example, 40126 + ... + 41618.

It is an arithmetic number, because the mean of its divisors is an integer number (2588355).

Almost surely, 2^61021896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61021896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82827360).

61021896 is an abundant number, since it is smaller than the sum of its proper divisors (104632824).

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

61021896 is a wasteful number, since it uses less digits than its factorization.

61021896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 61021896 is about 7811.6512979011. The cubic root of 61021896 is about 393.6968129721.

The spelling of 61021896 in words is "sixty-one million, twenty-one thousand, eight hundred ninety-six".