6686157546 has 24 divisors (see below), whose sum is σ = 15116531040. Its totient is φ = 2131818216.

The previous prime is 6686157509. The next prime is 6686157547. The reversal of 6686157546 is 6457516866.

6686157546 is a `hidden beast` number, since 6 + 6 + 8 + 61 + 575 + 4 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6686157492 and 6686157501.

It is not an unprimeable number, because it can be changed into a prime (6686157547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8074656 + ... + 8075483.

It is an arithmetic number, because the mean of its divisors is an integer number (629855460).

Almost surely, 2^6686157546 is an apocalyptic number.

6686157546 is an abundant number, since it is smaller than the sum of its proper divisors (8430373494).

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

6686157546 is a wasteful number, since it uses less digits than its factorization.

6686157546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16150170 (or 16150167 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 6686157546 is about 81768.9277537623. The cubic root of 6686157546 is about 1883.9044351569.

The spelling of 6686157546 in words is "six billion, six hundred eighty-six million, one hundred fifty-seven thousand, five hundred forty-six".