6594974640 has 400 divisors, whose sum is σ = 23790102336. Its totient is φ = 1692057600.

The previous prime is 6594974597. The next prime is 6594974641. The reversal of 6594974640 is 464794956.

It is a happy number.

6594974640 is a `hidden beast` number, since 6 + 5 + 94 + 97 + 464 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6594974641) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27364920 + ... + 27365160.

Almost surely, 2^6594974640 is an apocalyptic number.

6594974640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6594974640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11895051168).

6594974640 is an abundant number, since it is smaller than the sum of its proper divisors (17195127696).

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

6594974640 is a wasteful number, since it uses less digits than its factorization.

6594974640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The square root of 6594974640 is about 81209.4492038950. The cubic root of 6594974640 is about 1875.3012507963.

The spelling of 6594974640 in words is "six billion, five hundred ninety-four million, nine hundred seventy-four thousand, six hundred forty".