61381060 has 48 divisors (see below), whose sum is σ = 141797376. Its totient is φ = 22177152.

The previous prime is 61381037. The next prime is 61381093. The reversal of 61381060 is 6018316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9709 + ... + 14731.

It is an arithmetic number, because the mean of its divisors is an integer number (2954112).

Almost surely, 2^61381060 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 61381060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70898688).

61381060 is an abundant number, since it is smaller than the sum of its proper divisors (80416316).

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

61381060 is a wasteful number, since it uses less digits than its factorization.

61381060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092 (or 5090 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61381060 is about 7834.6065631913. The cubic root of 61381060 is about 394.4677122351.

Adding to 61381060 its reverse (6018316), we get a palindrome (67399376).

The spelling of 61381060 in words is "sixty-one million, three hundred eighty-one thousand, sixty".