75672666 has 12 divisors (see below), whose sum is σ = 163957482. Its totient is φ = 25224216.

The previous prime is 75672637. The next prime is 75672671. The reversal of 75672666 is 66627657.

It can be written as a sum of positive squares in only one way, i.e., 73359225 + 2313441 = 8565^2 + 1521^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2102001 + ... + 2102036.

Almost surely, 2^75672666 is an apocalyptic number.

75672666 is an abundant number, since it is smaller than the sum of its proper divisors (88284816).

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

75672666 is a wasteful number, since it uses less digits than its factorization.

75672666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204045 (or 4204042 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 75672666 is about 8699.0037360608. The cubic root of 75672666 is about 422.9733564695.

The spelling of 75672666 in words is "seventy-five million, six hundred seventy-two thousand, six hundred sixty-six".