75997986 has 16 divisors (see below), whose sum is σ = 159996000. Its totient is φ = 23999328.

The previous prime is 75997981. The next prime is 75997991. The reversal of 75997986 is 68979957.

It is an interprime number because it is at equal distance from previous prime (75997981) and next prime (75997991).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75997981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333211 + ... + 333438.

It is an arithmetic number, because the mean of its divisors is an integer number (9999750).

Almost surely, 2^75997986 is an apocalyptic number.

75997986 is an abundant number, since it is smaller than the sum of its proper divisors (83998014).

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

75997986 is a wasteful number, since it uses less digits than its factorization.

75997986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666673.

The product of its digits is 8573040, while the sum is 60.

The square root of 75997986 is about 8717.6823754941. The cubic root of 75997986 is about 423.5786167483.

The spelling of 75997986 in words is "seventy-five million, nine hundred ninety-seven thousand, nine hundred eighty-six".