8779681 has 4 divisors (see below), whose sum is σ = 8824000. Its totient is φ = 8735364.

The previous prime is 8779621. The next prime is 8779703. The reversal of 8779681 is 1869778.

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: 1869778 = 2 ⋅934889.

It is a cyclic number.

It is not a de Polignac number, because 8779681 - 2¹³ = 8771489 is a prime.

It is a super-2 number, since 2×8779681² = 154165596923522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8779621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21861 + ... + 22258.

It is an arithmetic number, because the mean of its divisors is an integer number (2206000).

Almost surely, 2^8779681 is an apocalyptic number.

It is an amenable number.

8779681 is a deficient number, since it is larger than the sum of its proper divisors (44319).

8779681 is a wasteful number, since it uses less digits than its factorization.

8779681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44318.

The product of its digits is 169344, while the sum is 46.

The square root of 8779681 is about 2963.0526488741. The cubic root of 8779681 is about 206.2969998797.

Subtracting from 8779681 its reverse (1869778), we obtain a triangular number (6909903 = T₃₇₁₇).

It can be divided in two parts, 877968 and 1, that added together give a square (877969 = 937²).

The spelling of 8779681 in words is "eight million, seven hundred seventy-nine thousand, six hundred eighty-one".