6424640316 has 36 divisors (see below), whose sum is σ = 17094805000. Its totient is φ = 2028833568.

The previous prime is 6424640279. The next prime is 6424640317. The reversal of 6424640316 is 6130464246.

6424640316 is a `hidden beast` number, since 6 + 4 + 2 + 4 + 640 + 3 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6424640317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4695691 + ... + 4697058.

Almost surely, 2^6424640316 is an apocalyptic number.

It is an amenable number.

6424640316 is an abundant number, since it is smaller than the sum of its proper divisors (10670164684).

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

6424640316 is a wasteful number, since it uses less digits than its factorization.

6424640316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9392778 (or 9392773 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6424640316 is about 80153.8540308574. The cubic root of 6424640316 is about 1859.0151949399.

The spelling of 6424640316 in words is "six billion, four hundred twenty-four million, six hundred forty thousand, three hundred sixteen".