61631060 has 48 divisors (see below), whose sum is σ = 138028800. Its totient is φ = 23048064.

The previous prime is 61631039. The next prime is 61631093. The reversal of 61631060 is 6013616.

61631060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 28994 + ... + 31046.

It is an arithmetic number, because the mean of its divisors is an integer number (2875600).

Almost surely, 2^61631060 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 61631060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69014400).

61631060 is an abundant number, since it is smaller than the sum of its proper divisors (76397740).

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

61631060 is a wasteful number, since it uses less digits than its factorization.

61631060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 61631060 is about 7850.5452039970. The cubic root of 61631060 is about 395.0025316293.

Adding to 61631060 its reverse (6013616), we get a palindrome (67644676).

The spelling of 61631060 in words is "sixty-one million, six hundred thirty-one thousand, sixty".