87028147897 has 4 divisors (see below), whose sum is σ = 87925345396. Its totient is φ = 86130950400.

The previous prime is 87028147883. The next prime is 87028147901. The reversal of 87028147897 is 79874182078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50951324176 + 36076823721 = 225724^2 + 189939^2 .

It is a cyclic number.

It is not a de Polignac number, because 87028147897 - 2⁷ = 87028147769 is a prime.

It is a super-3 number, since 3×87028147897³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87028147697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448598604 + ... + 448598797.

It is an arithmetic number, because the mean of its divisors is an integer number (21981336349).

Almost surely, 2^87028147897 is an apocalyptic number.

It is an amenable number.

87028147897 is a deficient number, since it is larger than the sum of its proper divisors (897197499).

87028147897 is an equidigital number, since it uses as much as digits as its factorization.

87028147897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897197498.

The product of its (nonzero) digits is 12644352, while the sum is 61.

The spelling of 87028147897 in words is "eighty-seven billion, twenty-eight million, one hundred forty-seven thousand, eight hundred ninety-seven".