87793666 has 8 divisors (see below), whose sum is σ = 131730300. Its totient is φ = 43883568.

The previous prime is 87793663. The next prime is 87793679. The reversal of 87793666 is 66639778.

It can be written as a sum of positive squares in 2 ways, for example, as 83192641 + 4601025 = 9121^2 + 2145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87793663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9160 + ... + 16108.

Almost surely, 2^87793666 is an apocalyptic number.

87793666 is a deficient number, since it is larger than the sum of its proper divisors (43936634).

87793666 is a wasteful number, since it uses less digits than its factorization.

87793666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268.

The product of its digits is 2286144, while the sum is 52.

The square root of 87793666 is about 9369.8274263724. The cubic root of 87793666 is about 444.4481076411.

The spelling of 87793666 in words is "eighty-seven million, seven hundred ninety-three thousand, six hundred sixty-six".