87688151 has 4 divisors (see below), whose sum is σ = 87714912. Its totient is φ = 87661392.

The previous prime is 87688147. The next prime is 87688201. The reversal of 87688151 is 15188678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15188678 = 2 ⋅7594339.

It is a cyclic number.

It is not a de Polignac number, because 87688151 - 2² = 87688147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87688651) 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, 7646 + ... + 15291.

It is an arithmetic number, because the mean of its divisors is an integer number (21928728).

Almost surely, 2^87688151 is an apocalyptic number.

87688151 is the 7646-th pentagonal number.

87688151 is a deficient number, since it is larger than the sum of its proper divisors (26761).

87688151 is a wasteful number, since it uses less digits than its factorization.

87688151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26760.

The product of its digits is 107520, while the sum is 44.

The square root of 87688151 is about 9364.1951602901. The cubic root of 87688151 is about 444.2699826347.

The spelling of 87688151 in words is "eighty-seven million, six hundred eighty-eight thousand, one hundred fifty-one".