61764552 has 64 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 20492352.

The previous prime is 61764551. The next prime is 61764559. The reversal of 61764552 is 25546716.

It is a happy number.

61764552 is a `hidden beast` number, since 6 + 1 + 7 + 645 + 5 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (61764551) 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, 57573 + ... + 58635.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^61764552 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 61764552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86184000).

61764552 is an abundant number, since it is smaller than the sum of its proper divisors (110603448).

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

61764552 is a wasteful number, since it uses less digits than its factorization.

61764552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1337 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 61764552 is about 7859.0426897937. The cubic root of 61764552 is about 395.2875159274.

The spelling of 61764552 in words is "sixty-one million, seven hundred sixty-four thousand, five hundred fifty-two".