61233620 has 48 divisors (see below), whose sum is σ = 147584640. Its totient is φ = 20905344.

The previous prime is 61233619. The next prime is 61233629. The reversal of 61233620 is 2633216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61233629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37991 + ... + 39569.

It is an arithmetic number, because the mean of its divisors is an integer number (3074680).

Almost surely, 2^61233620 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 61233620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73792320).

61233620 is an abundant number, since it is smaller than the sum of its proper divisors (86351020).

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

61233620 is a wasteful number, since it uses less digits than its factorization.

61233620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 61233620 is about 7825.1913714618. The cubic root of 61233620 is about 394.1516160885.

Adding to 61233620 its reverse (2633216), we get a palindrome (63866836).

The spelling of 61233620 in words is "sixty-one million, two hundred thirty-three thousand, six hundred twenty".