61324660 has 24 divisors (see below), whose sum is σ = 131523840. Its totient is φ = 24007584.

The previous prime is 61324639. The next prime is 61324667. The reversal of 61324660 is 6642316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61324667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31680 + ... + 33559.

It is an arithmetic number, because the mean of its divisors is an integer number (5480160).

Almost surely, 2^61324660 is an apocalyptic number.

It is an amenable number.

61324660 is an abundant number, since it is smaller than the sum of its proper divisors (70199180).

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

61324660 is a wasteful number, since it uses less digits than its factorization.

61324660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65295 (or 65293 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 61324660 is about 7831.0063210292. The cubic root of 61324660 is about 394.3468562977.

Adding to 61324660 its reverse (6642316), we get a palindrome (67966976).

The spelling of 61324660 in words is "sixty-one million, three hundred twenty-four thousand, six hundred sixty".