6664404155 has 8 divisors (see below), whose sum is σ = 8000275200. Its totient is φ = 5329529856.

The previous prime is 6664404133. The next prime is 6664404167. The reversal of 6664404155 is 5514044666.

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

It is a cyclic number.

It is not a de Polignac number, because 6664404155 - 2¹⁸ = 6664142011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234395 + ... + 261284.

It is an arithmetic number, because the mean of its divisors is an integer number (1000034400).

Almost surely, 2^6664404155 is an apocalyptic number.

6664404155 is a deficient number, since it is larger than the sum of its proper divisors (1335871045).

6664404155 is a wasteful number, since it uses less digits than its factorization.

6664404155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498373.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 6664404155 is about 81635.8019192560. The cubic root of 6664404155 is about 1881.8591231725.

The spelling of 6664404155 in words is "six billion, six hundred sixty-four million, four hundred four thousand, one hundred fifty-five".