6440014524 has 72 divisors (see below), whose sum is σ = 15812188672. Its totient is φ = 2037896640.

The previous prime is 6440014523. The next prime is 6440014531. The reversal of 6440014524 is 4254100446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6440014491 and 6440014500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440014523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1041867 + ... + 1048029.

Almost surely, 2^6440014524 is an apocalyptic number.

It is an amenable number.

6440014524 is an abundant number, since it is smaller than the sum of its proper divisors (9372174148).

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

6440014524 is a wasteful number, since it uses less digits than its factorization.

6440014524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307 (or 6252 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 6440014524 is about 80249.7010835554. The cubic root of 6440014524 is about 1860.4968923348.

The spelling of 6440014524 in words is "six billion, four hundred forty million, fourteen thousand, five hundred twenty-four".