61787232 has 96 divisors (see below), whose sum is σ = 194110560. Its totient is φ = 19008000.

The previous prime is 61787227. The next prime is 61787249. The reversal of 61787232 is 23278716.

61787232 is a `hidden beast` number, since 617 + 8 + 7 + 2 + 32 = 666.

61787232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8482 + ... + 13982.

It is an arithmetic number, because the mean of its divisors is an integer number (2021985).

Almost surely, 2^61787232 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 61787232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97055280).

61787232 is an abundant number, since it is smaller than the sum of its proper divisors (132323328).

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

61787232 is a wasteful number, since it uses less digits than its factorization.

61787232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533 (or 5519 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 61787232 is about 7860.4854811901. The cubic root of 61787232 is about 395.3358933190.

The spelling of 61787232 in words is "sixty-one million, seven hundred eighty-seven thousand, two hundred thirty-two".