74511666 has 12 divisors (see below), whose sum is σ = 161441982. Its totient is φ = 24837216.

The previous prime is 74511653. The next prime is 74511667. The reversal of 74511666 is 66611547.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 13905441 = 7785^2 + 3729^2 .

It is a super-3 number, since 3×74511666³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74511666.

It is not an unprimeable number, because it can be changed into a prime (74511667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2069751 + ... + 2069786.

Almost surely, 2^74511666 is an apocalyptic number.

74511666 is an abundant number, since it is smaller than the sum of its proper divisors (86930316).

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

74511666 is a wasteful number, since it uses less digits than its factorization.

74511666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139545 (or 4139542 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 74511666 is about 8632.0140175975. The cubic root of 74511666 is about 420.7990570478.

The spelling of 74511666 in words is "seventy-four million, five hundred eleven thousand, six hundred sixty-six".