88704221 has 4 divisors (see below), whose sum is σ = 89235552. Its totient is φ = 88172892.

The previous prime is 88704167. The next prime is 88704223. The reversal of 88704221 is 12240788.

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 88704221 - 2²² = 84509917 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 (88704223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265415 + ... + 265748.

It is an arithmetic number, because the mean of its divisors is an integer number (22308888).

Almost surely, 2^88704221 is an apocalyptic number.

It is an amenable number.

88704221 is a deficient number, since it is larger than the sum of its proper divisors (531331).

88704221 is a wasteful number, since it uses less digits than its factorization.

88704221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531330.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 88704221 is about 9418.2918302631. The cubic root of 88704221 is about 445.9793621933.

The spelling of 88704221 in words is "eighty-eight million, seven hundred four thousand, two hundred twenty-one".