61897752 has 96 divisors (see below), whose sum is σ = 192890880. Its totient is φ = 17565120.

The previous prime is 61897751. The next prime is 61897757. The reversal of 61897752 is 25779816.

It is a junction number, because it is equal to n+sod(n) for n = 61897698 and 61897707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61897751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95943 + ... + 96585.

It is an arithmetic number, because the mean of its divisors is an integer number (2009280).

Almost surely, 2^61897752 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 61897752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96445440).

61897752 is an abundant number, since it is smaller than the sum of its proper divisors (130993128).

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

61897752 is a wasteful number, since it uses less digits than its factorization.

61897752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 846 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 61897752 is about 7867.5124404096. The cubic root of 61897752 is about 395.5714678660.

The spelling of 61897752 in words is "sixty-one million, eight hundred ninety-seven thousand, seven hundred fifty-two".