75661503 has 8 divisors (see below), whose sum is σ = 101501568. Its totient is φ = 50131224.

The previous prime is 75661471. The next prime is 75661517. The reversal of 75661503 is 30516657.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75661503 - 2⁵ = 75661471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75661583) 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, 76875 + ... + 77852.

It is an arithmetic number, because the mean of its divisors is an integer number (12687696).

Almost surely, 2^75661503 is an apocalyptic number.

75661503 is a deficient number, since it is larger than the sum of its proper divisors (25840065).

75661503 is a wasteful number, since it uses less digits than its factorization.

75661503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154893.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 75661503 is about 8698.3620871978. The cubic root of 75661503 is about 422.9525568685.

The spelling of 75661503 in words is "seventy-five million, six hundred sixty-one thousand, five hundred three".