88687221 has 16 divisors (see below), whose sum is σ = 135856128. Its totient is φ = 50410800.

The previous prime is 88687213. The next prime is 88687289. The reversal of 88687221 is 12278688.

It is not a de Polignac number, because 88687221 - 2³ = 88687213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88687121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7045 + ... + 15066.

It is an arithmetic number, because the mean of its divisors is an integer number (8491008).

Almost surely, 2^88687221 is an apocalyptic number.

It is an amenable number.

88687221 is a deficient number, since it is larger than the sum of its proper divisors (47168907).

88687221 is a wasteful number, since it uses less digits than its factorization.

88687221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22312.

The product of its digits is 86016, while the sum is 42.

The square root of 88687221 is about 9417.3892879078. The cubic root of 88687221 is about 445.9508699996.

The spelling of 88687221 in words is "eighty-eight million, six hundred eighty-seven thousand, two hundred twenty-one".