61000860 has 24 divisors (see below), whose sum is σ = 170802576. Its totient is φ = 16266880.

The previous prime is 61000859. The next prime is 61000897. The reversal of 61000860 is 6800016.

61000860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61000860² = 7442209841479200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508281 + ... + 508400.

It is an arithmetic number, because the mean of its divisors is an integer number (7116774).

Almost surely, 2^61000860 is an apocalyptic number.

61000860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61000860 is an abundant number, since it is smaller than the sum of its proper divisors (109801716).

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

61000860 is a wasteful number, since it uses less digits than its factorization.

61000860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016693 (or 1016691 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 61000860 is about 7810.3047315710. The cubic root of 61000860 is about 393.6515682401.

Adding to 61000860 its reverse (6800016), we get a palindrome (67800876).

The spelling of 61000860 in words is "sixty-one million, eight hundred sixty", and thus it is an aban number.