664271086 has 8 divisors (see below), whose sum is σ = 1001912184. Its totient is φ = 330300360.

The previous prime is 664271081. The next prime is 664271099. The reversal of 664271086 is 680172466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664271081) 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, 917140 + ... + 917863.

It is an arithmetic number, because the mean of its divisors is an integer number (125239023).

Almost surely, 2^664271086 is an apocalyptic number.

664271086 is a deficient number, since it is larger than the sum of its proper divisors (337641098).

664271086 is a wasteful number, since it uses less digits than its factorization.

664271086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835186.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 664271086 is about 25773.4570052215. The cubic root of 664271086 is about 872.5328426648.

The spelling of 664271086 in words is "six hundred sixty-four million, two hundred seventy-one thousand, eighty-six".