87865602397 has 8 divisors (see below), whose sum is σ = 89198191040. Its totient is φ = 86536499040.

The previous prime is 87865602361. The next prime is 87865602443. The reversal of 87865602397 is 79320656878.

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 87865602397 - 2¹¹ = 87865600349 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 (87865602997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820497 + ... + 921382.

It is an arithmetic number, because the mean of its divisors is an integer number (11149773880).

Almost surely, 2^87865602397 is an apocalyptic number.

It is an amenable number.

87865602397 is a deficient number, since it is larger than the sum of its proper divisors (1332588643).

87865602397 is a wasteful number, since it uses less digits than its factorization.

87865602397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742643.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 87865602397 in words is "eighty-seven billion, eight hundred sixty-five million, six hundred two thousand, three hundred ninety-seven".