61006860 has 36 divisors (see below), whose sum is σ = 185054688. Its totient is φ = 16268448.

The previous prime is 61006823. The next prime is 61006871. The reversal of 61006860 is 6860016.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169284 + ... + 169643.

It is an arithmetic number, because the mean of its divisors is an integer number (5140408).

Almost surely, 2^61006860 is an apocalyptic number.

61006860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61006860 is an abundant number, since it is smaller than the sum of its proper divisors (124047828).

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

61006860 is a wasteful number, since it uses less digits than its factorization.

61006860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338942 (or 338937 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 61006860 is about 7810.6888300585. The cubic root of 61006860 is about 393.6644742438.

Adding to 61006860 its reverse (6860016), we get a palindrome (67866876).

The spelling of 61006860 in words is "sixty-one million, six thousand, eight hundred sixty".