61646060 has 24 divisors (see below), whose sum is σ = 147950880. Its totient is φ = 21135744.

The previous prime is 61646059. The next prime is 61646077. The reversal of 61646060 is 6064616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220025 + ... + 220304.

It is an arithmetic number, because the mean of its divisors is an integer number (6164620).

Almost surely, 2^61646060 is an apocalyptic number.

It is an amenable number.

61646060 is an abundant number, since it is smaller than the sum of its proper divisors (86304820).

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

61646060 is a wasteful number, since it uses less digits than its factorization.

61646060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440345 (or 440343 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 61646060 is about 7851.5004935363. The cubic root of 61646060 is about 395.0345747656.

The spelling of 61646060 in words is "sixty-one million, six hundred forty-six thousand, sixty".