6686249434 has 16 divisors (see below), whose sum is σ = 10180361448. Its totient is φ = 3292918272.

The previous prime is 6686249419. The next prime is 6686249501. The reversal of 6686249434 is 4349426866.

It can be written as a sum of positive squares in 4 ways, for example, as 6678975625 + 7273809 = 81725^2 + 2697^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80274 + ... + 140770.

Almost surely, 2^6686249434 is an apocalyptic number.

6686249434 is a deficient number, since it is larger than the sum of its proper divisors (3494112014).

6686249434 is a wasteful number, since it uses less digits than its factorization.

6686249434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61329.

The product of its digits is 5971968, while the sum is 52.

The square root of 6686249434 is about 81769.4896278557. The cubic root of 6686249434 is about 1883.9130652965.

The spelling of 6686249434 in words is "six billion, six hundred eighty-six million, two hundred forty-nine thousand, four hundred thirty-four".