61506060 has 96 divisors (see below), whose sum is σ = 214728192. Its totient is φ = 12779520.

The previous prime is 61506041. The next prime is 61506073. The reversal of 61506060 is 6060516.

It is a self number, because there is not a number n which added to its sum of digits gives 61506060.

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, 2037 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (2236752).

Almost surely, 2^61506060 is an apocalyptic number.

61506060 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 61506060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107364096).

61506060 is an abundant number, since it is smaller than the sum of its proper divisors (153222132).

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

61506060 is a wasteful number, since it uses less digits than its factorization.

61506060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13343 (or 13341 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61506060 is about 7842.5799326497. The cubic root of 61506060 is about 394.7353030864.

Adding to 61506060 its reverse (6060516), we get a palindrome (67566576).

The spelling of 61506060 in words is "sixty-one million, five hundred six thousand, sixty".