86668820740 has 48 divisors (see below), whose sum is σ = 185572591344. Its totient is φ = 33991488000.

The previous prime is 86668820723. The next prime is 86668820743. The reversal of 86668820740 is 4702886668.

It can be written as a sum of positive squares in 8 ways, for example, as 25710198336 + 60958622404 = 160344^2 + 246898^2 .

It is a super-2 number, since 2×86668820740² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86668820743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274690 + ... + 498790.

It is an arithmetic number, because the mean of its divisors is an integer number (3866095653).

Almost surely, 2^86668820740 is an apocalyptic number.

It is an amenable number.

86668820740 is an abundant number, since it is smaller than the sum of its proper divisors (98903770604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86668820740 is a wasteful number, since it uses less digits than its factorization.

86668820740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224488 (or 224486 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 86668820740 in words is "eighty-six billion, six hundred sixty-eight million, eight hundred twenty thousand, seven hundred forty".