61000086 has 16 divisors (see below), whose sum is σ = 139428864. Its totient is φ = 17428584.

The previous prime is 61000039. The next prime is 61000091. The reversal of 61000086 is 68000016.

61000086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

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, 726150 + ... + 726233.

It is an arithmetic number, because the mean of its divisors is an integer number (8714304).

Almost surely, 2^61000086 is an apocalyptic number.

61000086 is an abundant number, since it is smaller than the sum of its proper divisors (78428778).

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

61000086 is a wasteful number, since it uses less digits than its factorization.

61000086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452395.

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

The square root of 61000086 is about 7810.2551814906. The cubic root of 61000086 is about 393.6499033040.

The spelling of 61000086 in words is "sixty-one million, eighty-six", and thus it is an aban number and an uban number.