6394027644 has 18 divisors (see below), whose sum is σ = 16162681080. Its totient is φ = 2131342536.

The previous prime is 6394027639. The next prime is 6394027657. The reversal of 6394027644 is 4467204936.

It is a happy number.

6394027644 is a `hidden beast` number, since 639 + 4 + 0 + 2 + 7 + 6 + 4 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6394027644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88805904 + ... + 88805975.

Almost surely, 2^6394027644 is an apocalyptic number.

It is an amenable number.

6394027644 is an abundant number, since it is smaller than the sum of its proper divisors (9768653436).

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

6394027644 is a wasteful number, since it uses less digits than its factorization.

6394027644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177611889 (or 177611884 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 6394027644 is about 79962.6640626736. The cubic root of 6394027644 is about 1856.0578282709.

The spelling of 6394027644 in words is "six billion, three hundred ninety-four million, twenty-seven thousand, six hundred forty-four".