87602721 has 8 divisors (see below), whose sum is σ = 116853984. Its totient is φ = 58376640.

The previous prime is 87602687. The next prime is 87602729. The reversal of 87602721 is 12720678.

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

It is not a de Polignac number, because 87602721 - 2⁹ = 87602209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87602729) 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, 4441 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (14606748).

Almost surely, 2^87602721 is an apocalyptic number.

It is an amenable number.

87602721 is a deficient number, since it is larger than the sum of its proper divisors (29251263).

87602721 is a wasteful number, since it uses less digits than its factorization.

87602721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 87602721 is about 9359.6325248377. The cubic root of 87602721 is about 444.1256593847.

The spelling of 87602721 in words is "eighty-seven million, six hundred two thousand, seven hundred twenty-one".