3651006636 has 60 divisors (see below), whose sum is σ = 10046809080. Its totient is φ = 1152947520.

The previous prime is 3651006589. The next prime is 3651006643. The reversal of 3651006636 is 6366001563.

It is a happy number.

3651006636 is a `hidden beast` number, since 3 + 6 + 5 + 10 + 0 + 6 + 636 = 666.

It is a super-2 number, since 2×3651006636² = 26659698912232072992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3651006636.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 290385 + ... + 302696.

It is an arithmetic number, because the mean of its divisors is an integer number (167446818).

Almost surely, 2^3651006636 is an apocalyptic number.

3651006636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3651006636 is an abundant number, since it is smaller than the sum of its proper divisors (6395802444).

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

3651006636 is a wasteful number, since it uses less digits than its factorization.

3651006636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593116 (or 593105 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 3651006636 is about 60423.5602724633. The cubic root of 3651006636 is about 1539.8232545794.

It can be divided in two parts, 365 and 1006636, that added together give a palindrome (1007001).

The spelling of 3651006636 in words is "three billion, six hundred fifty-one million, six thousand, six hundred thirty-six".