61018560 has 84 divisors (see below), whose sum is σ = 209888328. Its totient is φ = 16270848.

The previous prime is 61018553. The next prime is 61018577. The reversal of 61018560 is 6581016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7714 + ... + 13473.

Almost surely, 2^61018560 is an apocalyptic number.

61018560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61018560 is an abundant number, since it is smaller than the sum of its proper divisors (148869768).

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

61018560 is a wasteful number, since it uses less digits than its factorization.

61018560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210 (or 21197 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 61018560 is about 7811.4377677864. The cubic root of 61018560 is about 393.6896385173.

Adding to 61018560 its reverse (6581016), we get a palindrome (67599576).

The spelling of 61018560 in words is "sixty-one million, eighteen thousand, five hundred sixty".