75490666 has 16 divisors (see below), whose sum is σ = 114353856. Its totient is φ = 37374976.

The previous prime is 75490663. The next prime is 75490691. The reversal of 75490666 is 66609457.

It is not an unprimeable number, because it can be changed into a prime (75490661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116355 + ... + 117001.

It is an arithmetic number, because the mean of its divisors is an integer number (7147116).

Almost surely, 2^75490666 is an apocalyptic number.

75490666 is a deficient number, since it is larger than the sum of its proper divisors (38863190).

75490666 is a wasteful number, since it uses less digits than its factorization.

75490666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 75490666 is about 8688.5364705455. The cubic root of 75490666 is about 422.6339871251.

The spelling of 75490666 in words is "seventy-five million, four hundred ninety thousand, six hundred sixty-six".