664235105 has 8 divisors (see below), whose sum is σ = 800259264. Its totient is φ = 529270000.

The previous prime is 664235093. The next prime is 664235149. The reversal of 664235105 is 501532466.

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

It is a de Polignac number, because none of the positive numbers 2^k-664235105 is a prime.

It is a super-2 number, since 2×664235105² = 882416549428722050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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, 263381 + ... + 265890.

It is an arithmetic number, because the mean of its divisors is an integer number (100032408).

Almost surely, 2^664235105 is an apocalyptic number.

It is an amenable number.

664235105 is a deficient number, since it is larger than the sum of its proper divisors (136024159).

664235105 is a wasteful number, since it uses less digits than its factorization.

664235105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529527.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 664235105 is about 25772.7589714411. The cubic root of 664235105 is about 872.5170884686.

The spelling of 664235105 in words is "six hundred sixty-four million, two hundred thirty-five thousand, one hundred five".