87064221 has 8 divisors (see below), whose sum is σ = 116180064. Its totient is φ = 57995600.

The previous prime is 87064217. The next prime is 87064249. The reversal of 87064221 is 12246078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87064221 - 2² = 87064217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87064721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7251 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (14522508).

Almost surely, 2^87064221 is an apocalyptic number.

It is an amenable number.

87064221 is a deficient number, since it is larger than the sum of its proper divisors (29115843).

87064221 is a wasteful number, since it uses less digits than its factorization.

87064221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23611.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 87064221 is about 9330.8210249688. The cubic root of 87064221 is about 443.2137645902.

The spelling of 87064221 in words is "eighty-seven million, sixty-four thousand, two hundred twenty-one".