75565998 has 12 divisors (see below), whose sum is σ = 163726368. Its totient is φ = 25188660.

The previous prime is 75565991. The next prime is 75565999. The reversal of 75565998 is 89956557.

It is a happy number.

75565998 is a `hidden beast` number, since 75 + 565 + 9 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75565991) 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 5 ways as a sum of consecutive naturals, for example, 2099038 + ... + 2099073.

It is an arithmetic number, because the mean of its divisors is an integer number (13643864).

Almost surely, 2^75565998 is an apocalyptic number.

75565998 is an abundant number, since it is smaller than the sum of its proper divisors (88160370).

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

75565998 is a wasteful number, since it uses less digits than its factorization.

75565998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198119 (or 4198116 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The square root of 75565998 is about 8692.8705270469. The cubic root of 75565998 is about 422.7745222877.

The spelling of 75565998 in words is "seventy-five million, five hundred sixty-five thousand, nine hundred ninety-eight".