2686064240 has 80 divisors (see below), whose sum is σ = 6404965056. Its totient is φ = 1047244800.

The previous prime is 2686064231. The next prime is 2686064263. The reversal of 2686064240 is 424606862.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2686064240² = 14429882202813555200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2686064194 and 2686064203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549005 + ... + 553875.

Almost surely, 2^2686064240 is an apocalyptic number.

2686064240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2686064240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3202482528).

2686064240 is an abundant number, since it is smaller than the sum of its proper divisors (3718900816).

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

2686064240 is a wasteful number, since it uses less digits than its factorization.

2686064240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 2686064240 is about 51827.2538342521. The cubic root of 2686064240 is about 1390.0768102751.

The spelling of 2686064240 in words is "two billion, six hundred eighty-six million, sixty-four thousand, two hundred forty".