61816060 has 24 divisors (see below), whose sum is σ = 129978576. Its totient is φ = 24695040.

The previous prime is 61816049. The next prime is 61816061. The reversal of 61816060 is 6061816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61816061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20404 + ... + 23236.

It is an arithmetic number, because the mean of its divisors is an integer number (5415774).

Almost surely, 2^61816060 is an apocalyptic number.

It is an amenable number.

61816060 is an abundant number, since it is smaller than the sum of its proper divisors (68162516).

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

61816060 is a wasteful number, since it uses less digits than its factorization.

61816060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 61816060 is about 7862.3189963267. The cubic root of 61816060 is about 395.3973675684.

Adding to 61816060 its reverse (6061816), we get a palindrome (67877876).

The spelling of 61816060 in words is "sixty-one million, eight hundred sixteen thousand, sixty".