75579666 has 16 divisors (see below), whose sum is σ = 154376064. Its totient is φ = 24657104.

The previous prime is 75579661. The next prime is 75579667. The reversal of 75579666 is 66697557.

It is not an unprimeable number, because it can be changed into a prime (75579661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133725 + ... + 134288.

It is an arithmetic number, because the mean of its divisors is an integer number (9648504).

Almost surely, 2^75579666 is an apocalyptic number.

75579666 is an abundant number, since it is smaller than the sum of its proper divisors (78796398).

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

75579666 is a wasteful number, since it uses less digits than its factorization.

75579666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268065.

The product of its digits is 2381400, while the sum is 51.

The square root of 75579666 is about 8693.6566529856. The cubic root of 75579666 is about 422.8000105318.

It can be divided in two parts, 75579 and 666, that added together give a triangular number (76245 = T₃₉₀).

The spelling of 75579666 in words is "seventy-five million, five hundred seventy-nine thousand, six hundred sixty-six".