75666616 has 32 divisors (see below), whose sum is σ = 147666240. Its totient is φ = 36320128.

The previous prime is 75666599. The next prime is 75666623. The reversal of 75666616 is 61666657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18030 + ... + 21826.

It is an arithmetic number, because the mean of its divisors is an integer number (4614570).

Almost surely, 2^75666616 is an apocalyptic number.

It is an amenable number.

75666616 is a deficient number, since it is larger than the sum of its proper divisors (71999624).

75666616 is a wasteful number, since it uses less digits than its factorization.

75666616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903 (or 3899 counting only the distinct ones).

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

The square root of 75666616 is about 8698.6559881398. The cubic root of 75666616 is about 422.9620839844.

The spelling of 75666616 in words is "seventy-five million, six hundred sixty-six thousand, six hundred sixteen".