660408225199 has 8 divisors (see below), whose sum is σ = 667111728528. Its totient is φ = 653707953600.

The previous prime is 660408225181. The next prime is 660408225283. The reversal of 660408225199 is 991522804066.

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-660408225199 is a prime.

It is a super-2 number, since 2×660408225199² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660408225299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396097 + ... + 1215610.

It is an arithmetic number, because the mean of its divisors is an integer number (83388966066).

Almost surely, 2^660408225199 is an apocalyptic number.

660408225199 is a deficient number, since it is larger than the sum of its proper divisors (6703503329).

660408225199 is a wasteful number, since it uses less digits than its factorization.

660408225199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615865.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 660408225199 in words is "six hundred sixty billion, four hundred eight million, two hundred twenty-five thousand, one hundred ninety-nine".