61603944 has 48 divisors (see below), whose sum is σ = 159197760. Its totient is φ = 19864800.

The previous prime is 61603939. The next prime is 61603957. The reversal of 61603944 is 44930616.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21729 + ... + 24399.

It is an arithmetic number, because the mean of its divisors is an integer number (3316620).

Almost surely, 2^61603944 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 61603944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79598880).

61603944 is an abundant number, since it is smaller than the sum of its proper divisors (97593816).

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

61603944 is a wasteful number, since it uses less digits than its factorization.

61603944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 61603944 is about 7848.8180001832. The cubic root of 61603944 is about 394.9445929868.

The spelling of 61603944 in words is "sixty-one million, six hundred three thousand, nine hundred forty-four".