61000859 has 2 divisors, whose sum is σ = 61000860. Its totient is φ = 61000858.

The previous prime is 61000843. The next prime is 61000897. The reversal of 61000859 is 95800016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61000859 - 2⁴ = 61000843 is a prime.

It is a super-2 number, since 2×61000859² = 7442209597475762, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3618083 and since 61000859 and 3618083 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61000759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500429 + 30500430.

It is an arithmetic number, because the mean of its divisors is an integer number (30500430).

Almost surely, 2^61000859 is an apocalyptic number.

61000859 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000859 is an equidigital number, since it uses as much as digits as its factorization.

61000859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 61000859 is about 7810.3046675530. The cubic root of 61000859 is about 393.6515660890.

The spelling of 61000859 in words is "sixty-one million, eight hundred fifty-nine", and thus it is an aban number.