7318636 has 36 divisors (see below), whose sum is σ = 14681968. Its totient is φ = 3172608.

The previous prime is 7318631. The next prime is 7318681. The reversal of 7318636 is 6368137.

It is a super-3 number, since 3×7318636³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7318631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14785 + ... + 15271.

Almost surely, 2^7318636 is an apocalyptic number.

It is an amenable number.

7318636 is an abundant number, since it is smaller than the sum of its proper divisors (7363332).

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

7318636 is a wasteful number, since it uses less digits than its factorization.

7318636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 519 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 7318636 is about 2705.2977654964. The cubic root of 7318636 is about 194.1526767803.

The spelling of 7318636 in words is "seven million, three hundred eighteen thousand, six hundred thirty-six".