7686866436 has 12 divisors (see below), whose sum is σ = 17936021712. Its totient is φ = 2562288808.

The previous prime is 7686866431. The next prime is 7686866459. The reversal of 7686866436 is 6346686867.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 7686866436.

It is not an unprimeable number, because it can be changed into a prime (7686866431) 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, 320286090 + ... + 320286113.

It is an arithmetic number, because the mean of its divisors is an integer number (1494668476).

Almost surely, 2^7686866436 is an apocalyptic number.

It is an amenable number.

7686866436 is an abundant number, since it is smaller than the sum of its proper divisors (10249155276).

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

7686866436 is a wasteful number, since it uses less digits than its factorization.

7686866436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640572210 (or 640572208 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The square root of 7686866436 is about 87674.7765095526. The cubic root of 7686866436 is about 1973.5574734623.

The spelling of 7686866436 in words is "seven billion, six hundred eighty-six million, eight hundred sixty-six thousand, four hundred thirty-six".