87697087 has 4 divisors (see below), whose sum is σ = 88030800. Its totient is φ = 87363376.

The previous prime is 87697061. The next prime is 87697121. The reversal of 87697087 is 78079678.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78079678 = 2 ⋅39039839.

It is a cyclic number.

It is not a de Polignac number, because 87697087 - 2¹¹ = 87695039 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 (87697007) 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, 166462 + ... + 166987.

It is an arithmetic number, because the mean of its divisors is an integer number (22007700).

Almost surely, 2^87697087 is an apocalyptic number.

87697087 is a deficient number, since it is larger than the sum of its proper divisors (333713).

87697087 is a wasteful number, since it uses less digits than its factorization.

87697087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333712.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 87697087 is about 9364.6722847092. The cubic root of 87697087 is about 444.2850734676.

The spelling of 87697087 in words is "eighty-seven million, six hundred ninety-seven thousand, eighty-seven".