61000011 has 12 divisors (see below), whose sum is σ = 88746840. Its totient is φ = 40373280.

The previous prime is 61000003. The next prime is 61000039. The reversal of 61000011 is 11000016.

61000011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61000011 - 2³ = 61000003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 60999957 and 61000002.

It is not an unprimeable number, because it can be changed into a prime (61000001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 23130 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (7395570).

Almost surely, 2^61000011 is an apocalyptic number.

61000011 is a deficient number, since it is larger than the sum of its proper divisors (27746829).

61000011 is a wasteful number, since it uses less digits than its factorization.

61000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48906 (or 48903 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 61000011 is about 7810.2503801095. The cubic root of 61000011 is about 393.6497419722.

Adding to 61000011 its reverse (11000016), we get a palindrome (72000027).

The spelling of 61000011 in words is "sixty-one million, eleven", and thus it is an aban number and an uban number.