887298721 has 8 divisors (see below), whose sum is σ = 906029064. Its totient is φ = 868746240.

The previous prime is 887298719. The next prime is 887298749. The reversal of 887298721 is 127892788.

It can be written as a sum of positive squares in 4 ways, for example, as 127690000 + 759608721 = 11300^2 + 27561^2 .

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 887298721 - 2¹ = 887298719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (887298751) 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, 34360 + ... + 54361.

It is an arithmetic number, because the mean of its divisors is an integer number (113253633).

Almost surely, 2^887298721 is an apocalyptic number.

It is an amenable number.

887298721 is a deficient number, since it is larger than the sum of its proper divisors (18730343).

887298721 is a wasteful number, since it uses less digits than its factorization.

887298721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88931.

The product of its digits is 903168, while the sum is 52.

The square root of 887298721 is about 29787.5598362806. The cubic root of 887298721 is about 960.9260165606.

The spelling of 887298721 in words is "eight hundred eighty-seven million, two hundred ninety-eight thousand, seven hundred twenty-one".