6699550001 has 4 divisors (see below), whose sum is σ = 6742222452. Its totient is φ = 6656877552.

The previous prime is 6699549979. The next prime is 6699550007. The reversal of 6699550001 is 1000559966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 685392400 + 6014157601 = 26180^2 + 77551^2 .

It is a cyclic number.

It is not a de Polignac number, because 6699550001 - 2²² = 6695355697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6699550007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21335990 + ... + 21336303.

It is an arithmetic number, because the mean of its divisors is an integer number (1685555613).

Almost surely, 2^6699550001 is an apocalyptic number.

It is an amenable number.

6699550001 is a deficient number, since it is larger than the sum of its proper divisors (42672451).

6699550001 is a wasteful number, since it uses less digits than its factorization.

6699550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42672450.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 6699550001 is about 81850.7788661782. The cubic root of 6699550001 is about 1885.1614241184.

The spelling of 6699550001 in words is "six billion, six hundred ninety-nine million, five hundred fifty thousand, one".