87666701 has 4 divisors (see below), whose sum is σ = 87720000. Its totient is φ = 87613404.

The previous prime is 87666679. The next prime is 87666707. The reversal of 87666701 is 10766678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87666701 - 2¹⁸ = 87404557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87666707) 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, 24101 + ... + 27498.

It is an arithmetic number, because the mean of its divisors is an integer number (21930000).

Almost surely, 2^87666701 is an apocalyptic number.

It is an amenable number.

87666701 is a deficient number, since it is larger than the sum of its proper divisors (53299).

87666701 is a wasteful number, since it uses less digits than its factorization.

87666701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53298.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 87666701 is about 9363.0497702405. The cubic root of 87666701 is about 444.2337543714.

The spelling of 87666701 in words is "eighty-seven million, six hundred sixty-six thousand, seven hundred one".