87706567769 has 4 divisors (see below), whose sum is σ = 87825251280. Its totient is φ = 87587884260.

The previous prime is 87706567721. The next prime is 87706567771. The reversal of 87706567769 is 96776560778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96776560778 = 2 ⋅48388280389.

It is a cyclic number.

It is not a de Polignac number, because 87706567769 - 2¹² = 87706563673 is a prime.

It is a super-2 number, since 2×87706567769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87706567699 and 87706567708.

It is not an unprimeable number, because it can be changed into a prime (87706567709) 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, 59340647 + ... + 59342124.

It is an arithmetic number, because the mean of its divisors is an integer number (21956312820).

Almost surely, 2^87706567769 is an apocalyptic number.

It is an amenable number.

87706567769 is a deficient number, since it is larger than the sum of its proper divisors (118683511).

87706567769 is a wasteful number, since it uses less digits than its factorization.

87706567769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118683510.

The product of its (nonzero) digits is 186701760, while the sum is 68.

The spelling of 87706567769 in words is "eighty-seven billion, seven hundred six million, five hundred sixty-seven thousand, seven hundred sixty-nine".