61086889 has 8 divisors (see below), whose sum is σ = 63803520. Its totient is φ = 58426416.

The previous prime is 61086877. The next prime is 61086913. The reversal of 61086889 is 98868016.

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 61086889 - 2²³ = 52698281 is a prime.

It is a super-3 number, since 3×61086889³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61086859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11809 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (7975440).

Almost surely, 2^61086889 is an apocalyptic number.

It is an amenable number.

61086889 is a deficient number, since it is larger than the sum of its proper divisors (2716631).

61086889 is a wasteful number, since it uses less digits than its factorization.

61086889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28079.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 61086889 is about 7815.8101947271. The cubic root of 61086889 is about 393.8365358136.

The spelling of 61086889 in words is "sixty-one million, eighty-six thousand, eight hundred eighty-nine".