7644683412 has 18 divisors (see below), whose sum is σ = 19324060938. Its totient is φ = 2548227792.

The previous prime is 7644683411. The next prime is 7644683521. The reversal of 7644683412 is 2143864467.

It can be written as a sum of positive squares in only one way, i.e., 7203935376 + 440748036 = 84876^2 + 20994^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7644683411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106176123 + ... + 106176194.

It is an arithmetic number, because the mean of its divisors is an integer number (1073558941).

Almost surely, 2^7644683412 is an apocalyptic number.

It is an amenable number.

7644683412 is an abundant number, since it is smaller than the sum of its proper divisors (11679377526).

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

7644683412 is a wasteful number, since it uses less digits than its factorization.

7644683412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212352327 (or 212352322 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 7644683412 is about 87433.8802295769. The cubic root of 7644683412 is about 1969.9407690026.

The spelling of 7644683412 in words is "seven billion, six hundred forty-four million, six hundred eighty-three thousand, four hundred twelve".