7686018 has 12 divisors (see below), whose sum is σ = 16653078. Its totient is φ = 2562000.

The previous prime is 7686017. The next prime is 7686037. The reversal of 7686018 is 8106867.

It can be written as a sum of positive squares in only one way, i.e., 6985449 + 700569 = 2643^2 + 837^2 .

It is not an unprimeable number, because it can be changed into a prime (7686011) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 213483 + ... + 213518.

Almost surely, 2^7686018 is an apocalyptic number.

7686018 is an abundant number, since it is smaller than the sum of its proper divisors (8967060).

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

7686018 is a wasteful number, since it uses less digits than its factorization.

7686018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427009 (or 427006 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7686018 is about 2772.3668588410. The cubic root of 7686018 is about 197.3484860483.

It can be divided in two parts, 768 and 6018, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 7686018 in words is "seven million, six hundred eighty-six thousand, eighteen".