75663903 has 16 divisors (see below), whose sum is σ = 116420096. Its totient is φ = 42815520.

The previous prime is 75663899. The next prime is 75663911. The reversal of 75663903 is 30936657.

It is not a de Polignac number, because 75663903 - 2² = 75663899 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is the 8699-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75663953) by changing a digit.

It is a nontrivial repunit in base 8698.

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 15 ways as a sum of consecutive naturals, for example, 15328 + ... + 19653.

It is an arithmetic number, because the mean of its divisors is an integer number (7276256).

Almost surely, 2^75663903 is an apocalyptic number.

75663903 is a deficient number, since it is larger than the sum of its proper divisors (40756193).

75663903 is a wasteful number, since it uses less digits than its factorization.

75663903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35094.

The product of its (nonzero) digits is 102060, while the sum is 39.

The square root of 75663903 is about 8698.5000431109. The cubic root of 75663903 is about 422.9570288715.

The spelling of 75663903 in words is "seventy-five million, six hundred sixty-three thousand, nine hundred three".