86777247065 has 16 divisors (see below), whose sum is σ = 110358776592. Its totient is φ = 65278531584.

The previous prime is 86777246989. The next prime is 86777247071. The reversal of 86777247065 is 56074277768.

It can be written as a sum of positive squares in 8 ways, for example, as 2224820224 + 84552426841 = 47168^2 + 290779^2 .

It is a cyclic number.

It is not a de Polignac number, because 86777247065 - 2¹² = 86777242969 is a prime.

It is a super-2 number, since 2×86777247065² (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 = 86777246995 and 86777247013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372074 + ... + 558563.

It is an arithmetic number, because the mean of its divisors is an integer number (6897423537).

Almost surely, 2^86777247065 is an apocalyptic number.

86777247065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86777247065 is a deficient number, since it is larger than the sum of its proper divisors (23581529527).

86777247065 is a wasteful number, since it uses less digits than its factorization.

86777247065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931756.

The product of its (nonzero) digits is 27659520, while the sum is 59.

The spelling of 86777247065 in words is "eighty-six billion, seven hundred seventy-seven million, two hundred forty-seven thousand, sixty-five".