61281060 has 96 divisors (see below), whose sum is σ = 182044800. Its totient is φ = 15375360.

The previous prime is 61281053. The next prime is 61281071. The reversal of 61281060 is 6018216.

It is a self number, because there is not a number n which added to its sum of digits gives 61281060.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70911 + ... + 71769.

It is an arithmetic number, because the mean of its divisors is an integer number (1896300).

Almost surely, 2^61281060 is an apocalyptic number.

61281060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61281060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91022400).

61281060 is an abundant number, since it is smaller than the sum of its proper divisors (120763740).

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

61281060 is a wasteful number, since it uses less digits than its factorization.

61281060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 61281060 is about 7828.2220203569. Note that the first 3 decimals coincide. The cubic root of 61281060 is about 394.2533778654.

Adding to 61281060 its reverse (6018216), we get a palindrome (67299276).

The spelling of 61281060 in words is "sixty-one million, two hundred eighty-one thousand, sixty".