61000013 has 8 divisors (see below), whose sum is σ = 65946720. Its totient is φ = 56226960.

The previous prime is 61000003. The next prime is 61000039. The reversal of 61000013 is 31000016.

61000013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61000013 - 2¹² = 60995917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 60999958 and 61000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000003) 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 7 ways as a sum of consecutive naturals, for example, 42683 + ... + 44088.

It is an arithmetic number, because the mean of its divisors is an integer number (8243340).

Almost surely, 2^61000013 is an apocalyptic number.

It is an amenable number.

61000013 is a deficient number, since it is larger than the sum of its proper divisors (4946707).

61000013 is a wasteful number, since it uses less digits than its factorization.

61000013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86827.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 61000013 is about 7810.2505081463. The cubic root of 61000013 is about 393.6497462744.

Adding to 61000013 its reverse (31000016), we get a palindrome (92000029).

The spelling of 61000013 in words is "sixty-one million, thirteen", and thus it is an aban number and an uban number.