60005991 has 16 divisors (see below), whose sum is σ = 81164160. Its totient is φ = 39430560.

The previous prime is 60005989. The next prime is 60005999. The reversal of 60005991 is 19950006.

It is not a de Polignac number, because 60005991 - 2¹ = 60005989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60005999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69921 + ... + 70773.

It is an arithmetic number, because the mean of its divisors is an integer number (5072760).

Almost surely, 2^60005991 is an apocalyptic number.

60005991 is a deficient number, since it is larger than the sum of its proper divisors (21158169).

60005991 is a wasteful number, since it uses less digits than its factorization.

60005991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 60005991 is about 7746.3534001490. The cubic root of 60005991 is about 391.4997936677.

Adding to 60005991 its reverse (19950006), we get a palindrome (79955997).

The spelling of 60005991 in words is "sixty million, five thousand, nine hundred ninety-one".