87699666 has 8 divisors (see below), whose sum is σ = 175399344. Its totient is φ = 29233220.

The previous prime is 87699643. The next prime is 87699679. The reversal of 87699666 is 66699678.

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

87699666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308300 + ... + 7308311.

It is an arithmetic number, because the mean of its divisors is an integer number (21924918).

Almost surely, 2^87699666 is an apocalyptic number.

87699666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87699666 is a wasteful number, since it uses less digits than its factorization.

87699666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616616.

The product of its digits is 5878656, while the sum is 57.

The square root of 87699666 is about 9364.8099820552. The cubic root of 87699666 is about 444.2894286103.

The spelling of 87699666 in words is "eighty-seven million, six hundred ninety-nine thousand, six hundred sixty-six".