6599993401 has 8 divisors (see below), whose sum is σ = 6657854184. Its totient is φ = 6542376960.

The previous prime is 6599993353. The next prime is 6599993431. The reversal of 6599993401 is 1043999956.

It can be written as a sum of positive squares in 4 ways, for example, as 1004953401 + 5595040000 = 31701^2 + 74800^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6599993401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6599993431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6616 + ... + 115081.

It is an arithmetic number, because the mean of its divisors is an integer number (832231773).

Almost surely, 2^6599993401 is an apocalyptic number.

It is an amenable number.

6599993401 is a deficient number, since it is larger than the sum of its proper divisors (57860783).

6599993401 is a wasteful number, since it uses less digits than its factorization.

6599993401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122171.

The product of its (nonzero) digits is 2361960, while the sum is 55.

The square root of 6599993401 is about 81240.3434323120. The cubic root of 6599993401 is about 1875.7768302023.

It can be divided in two parts, 6599 and 993401, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 6599993401 in words is "six billion, five hundred ninety-nine million, nine hundred ninety-three thousand, four hundred one".