87257969065 has 8 divisors (see below), whose sum is σ = 108320237640. Its totient is φ = 67399258752.

The previous prime is 87257969063. The next prime is 87257969137. The reversal of 87257969065 is 56096975278.

It can be written as a sum of positive squares in 4 ways, for example, as 12385686681 + 74872282384 = 111291^2 + 273628^2 .

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 87257969065 - 2¹ = 87257969063 is a prime.

It is a super-2 number, since 2×87257969065² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87257968988 and 87257969006.

It is not an unprimeable number, because it can be changed into a prime (87257969063) 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, 300889404 + ... + 300889693.

It is an arithmetic number, because the mean of its divisors is an integer number (13540029705).

Almost surely, 2^87257969065 is an apocalyptic number.

It is an amenable number.

87257969065 is a deficient number, since it is larger than the sum of its proper divisors (21062268575).

87257969065 is a wasteful number, since it uses less digits than its factorization.

87257969065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601779131.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 87257969065 in words is "eighty-seven billion, two hundred fifty-seven million, nine hundred sixty-nine thousand, sixty-five".