87805966 has 8 divisors (see below), whose sum is σ = 133013304. Its totient is φ = 43468200.

The previous prime is 87805961. The next prime is 87805987. The reversal of 87805966 is 66950878.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87805961) 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 3 ways as a sum of consecutive naturals, for example, 217140 + ... + 217543.

It is an arithmetic number, because the mean of its divisors is an integer number (16626663).

Almost surely, 2^87805966 is an apocalyptic number.

87805966 is a deficient number, since it is larger than the sum of its proper divisors (45207338).

87805966 is a wasteful number, since it uses less digits than its factorization.

87805966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434786.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 87805966 is about 9370.4837655267. The cubic root of 87805966 is about 444.4688625797.

The spelling of 87805966 in words is "eighty-seven million, eight hundred five thousand, nine hundred sixty-six".