6900531636 has 12 divisors (see below), whose sum is σ = 16101240512. Its totient is φ = 2300177208.

The previous prime is 6900531623. The next prime is 6900531637. The reversal of 6900531636 is 6361350096.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 6900531594 and 6900531603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900531637) 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 3 ways as a sum of consecutive naturals, for example, 287522140 + ... + 287522163.

Almost surely, 2^6900531636 is an apocalyptic number.

It is an amenable number.

6900531636 is an abundant number, since it is smaller than the sum of its proper divisors (9200708876).

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

6900531636 is a wasteful number, since it uses less digits than its factorization.

6900531636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575044310 (or 575044308 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 6900531636 is about 83069.4386402123. The cubic root of 6900531636 is about 1903.8271552516.

The spelling of 6900531636 in words is "six billion, nine hundred million, five hundred thirty-one thousand, six hundred thirty-six".